Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.adass.org/adass/proceedings/adass98/reprints/curriemj.pdf Äàòà èçìåíåíèÿ: Fri Jul 16 22:04:12 1999 Äàòà èíäåêñèðîâàíèÿ: Tue Oct 2 15:07:24 2012 Êîäèðîâêà: Ïîèñêîâûå ñëîâà: ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï

iÞ h aÅ G Q h¼ a @ a¼ s ¦ c $| È| # 'Þ v} 7¦ G } ¢{ DÊ q a 1 ÷ ï~ 4Á G ¦ G ·} ~ Ô | G{ } ¯ s X~ s a~ Q Q ¼ ¯ × × h× Ù s ¦ Á ç 8~ }
6 ¥5 43

Ù

ç ~
)

s ¼ ´ º{ h¼ q q

¦~ a b X¼ 'Ã X

X} X s ¦~ a ¯{ ß X X a} '

h a ø a{ b P} Q Q X¼ Q (' ¼ ã{ h} Q D q ¯{ P

' P{ w{

þ ' ${ á Q h¼ X} a %¼ X¼ s ' ü{ h¼ c

X| G } q a # s ~ a ø X ¦ç G h} a

vÞ 8~ Õ q a ¯ q~ a | | G{ r} ÷ © ÷ l~ b $ i h| GÅ ¯ s Q~ X} P h a þç } Q Q aÁ ¦~ a $¼ h{ X¼ Q G b

aà a ' P{ t~ X} w{ s

ø } P s ~ a ¦ ø| q~ P m a{

¦Á | | ¢ ' a{ s iç ' P{

X{ cÕ " ¦ X ÷ þ~ g

a b } w{ ¦Å a ¦ ¯ h ¾ h P| © ÷ %~ h¼ q s ¯~

Q~ ¾ç ¦ { f ¯ s

v ' a{ øç h À G ¾¼ ¼ b~ ü~ G Aó qð Îó
%$

qà X f a ¢{ b~ D}

| r{ q ´ @{ G AÅ ÷

Ô ¦ | ·Þ c w} c
#!

| G{ 10 a¼ ¦ç G } X ºÖ X

s Á a| " i} X b a} ©¼ G Q ' h} Þ ¢À b P} h h


a~ ± G Q t¼ a ¢ %Õ

w÷ ç ¥¤ á~ X h¼ I g{

h a q | G 1 { G q dù Í q hß Q Q ¦

G 6} ÎÊ h Ì a º¼ ´ tÕ


G h¼ ' r{ s q x 2' ü~ ¢Ë ' { Q q · aÅ òÅ X{ "Ü æ


'{ aà } 6{ s a~ X a 10 ' { X¼ Î $ G Q 6¼ Ö r r â

vÒ ±Ó AÜ ð æ 1Â Æ c h¼ X s ¼ a ¦ Ö X{ P¼ a{ á~
§¢

&

±Ò vÜ "! Ió

wÑ 6ñ RÓ ÿ

a X¼ h¼ q s ¦~ h È

Õ ç
¢

q ü RÁ ¦ | a È{ P{

a ' %{ RÕ ± @¼ É X} X D ' X{ q a ·Þ b h} Qç ã¼ ´{ $ h| ç P ' { · s w c b~ a} h¼ ¢{ a Q ¯¼ ' { ¾| h X t{ t ·¼ QÁ q G q q a G ¦ É ¢ a{ c þç v{ | | q ¤ý Ç

Þ h a { Q v ¦ X ' b X} ¢ ù

÷ Q~ È X X| X ç h Q Q

u¼ ©¨ ¦ P| c ÷ È~ h¼ ¾~ l ¦ h| Q GÁ q s ¦~ a l¼ s

ç G~ ¾ ' ¯{ { º q a f b X} ¦~ a b

Èç Q~ ø a X¼ © | P h P} X

G q a q P RÁ | Û þù ÷ ~ Q ¢ ÎÕ w a{ ' h ´ ïù

q b a} wß É ¢ È ' X{ P{ f ¾ a{ ' þ{

¸¢

¢ ÷ ´~ P¼ q q s ' a ' G{ $} P| qÖ þù ïý ·Þ a{ ¦ G w} ¡ D ¦ h X a ÷ ~ $ a ¤ )É | h{ a þ ¢ ¢ þù

s b~ Î} ¯{ P wç ' X{ ¾~ RÁ ' ¾ý q

X È Q~ º ¦ | h{ q a @

´{ a Q $ ' ¼ ¼ È

s¼ a~ X s 8~ s¼ ¦~ G| á} X{ fß a¼ P ¯ß q G aÅ G a¼ " h

Dç h¼ q G ¡¦ q a a P¼ X s

¾ s Q~ a¼ Q ' Q b P a~ Q c X h DÖ a a¼ Q a¼ ¼ Ö G ¥¤ { G X} Q G c h¼ ~ v~ ¯ç ø}

@¼ h rÖ X r{ v s b~

~ ¼ ç

Q ¼ $ l| X} s b~ P 1ç ÷ { © ÷ D~ ¦Á h| Q ø~ Q~ tÞ q | $| Õ GÁ h · ¢ G Ú × ¢

·É h aÅ B~ á÷ Q qÉ Ö ~ Á Ö 1À b h} x nú ~

G Q P¼ ã h Q xù X ç

6 Q~ ' ¯{ Í Ì BÝ

| P{ G s Q~ Ë s| a~ Q

¦ a X ' ï{ s

¯{ i ÷ ¼ h{ a¼ ã{ ¦Á | X| X Å 8~ m s

8~ h 3 #÷ G Q ¦~ a

X s ¾~ ¾ X ÷ ¾~ P¼ Ö #~ a ¼ X

Q P| ÷ Gß

þ{ a X¼ 'Ö P{ ã~ bÁ È} m

q a r X 'ç G{ ¾} c X} h ¦ G X

q G ü{ c &Ö w} m{ s
¡

P} X h ç b~ a} | $| ¢ Õ á q ¦~ a b P}

a h¼ ' a á X

h| Q X{ h ´

¦ P| ¾ç ¾ q a a á Q ¦ X òÅ ~ X ¾ç rù aÁ

q{ bû ¯ l Q~ '

'Ã ¯{ ü¼ a Q~ '{ aÅ

±~ ÷ l ' %{ ¯¼ G Q

Á Ö Q~ $¼ | RÕ ± ÷ P¼ þÖ ¤ý

q { Q~ t¼ { sÝ ØÇ

X q{ 8} G v @~ h Q ' { ¾ s ' { X G È ¼ © | ºÃ q a q h G X aÅ G Q P¼ Ö ¢ ¢ q · ¾~ Î h× 1Ù ¨Þ | ¢ ù Ûý

G h¼ 'ç 6{ Q ~ ÈÔ G} } s{ ~ ¢ ÷ @ ¼ P~ ù ï{ { G ¢À

c h} Î s ~ a ¢ç À q a ¦ È s ' P| qÖ 6 ç a} h¼ h| Q { G G Q 6¼ Ö þ d Þ þÝ þù ~ ý ¢ X{ Î ~ a | ¦ X { Q qÞ $ G a · a~ P 3 Ç ¢ À s aÅ òÅ $ 8 q âÐ

¦ç G ¼ X D ~ a Þ c ¼ a¼ q ' X{ s ¾ý X þ G dù Í

a ´ a ø G{ } b~ aÅ vÍ þ a ¦~ a q X q Ì üË

6Ò ±Ó AÜ ð æ ¢Â tÆ AÓ òñ vð hÒ Ñ s¼ s ¼ | a X } ç

" X )É h| h¼ v s

a{ ´{ Q " ç G ¦~ a b

¦ P| h¼ $ w h} a X}

a h¼ c a X h

a ø ¦ç G h} ¦ È s a ø

q a ¢ a X @Õ h¼ ¦~ a b X} a{ '

÷ a ' X P{ e

m~ n{ h a

RÁ ¦ c ¦Ö Ã } P{ f q ¢ ¢

GÞ | P{ b a} h¼ áç qà ´ fÀ þù

h¼ a Îß q º | GÞ üý q

¦ | G } q a ø r 8 ' a{ iÔ h¼ ¦ q nû a ø

3{ ¾÷ a ·Þ | { | s{ q $ a

q ' P{ a{ ' { G X¼ þ

a Q ¯ç X{ GÅ Q X h¼

$¼ · bû s b~ Ï} 1À xù ļ s { ¼ b X} h

q P Í Ì a~ ± ' a{ Q ¦ G

a ø T{ üË #÷ 8¼ c ·ç

a t Q~ X¼ s ÷ þ~ bû

¢ h Q ~ a h¼ q

øÕ X¼ á G Q ' G{ ' s

aÁ Q ¯¼ ' G{ } P| ¯{ ¾~ Q

G ¾ s Q~ X a w} Q~ % h¼ Xç 'ç þ{ q r h a ' { h| a ü

q~ ~ c G Q

P ¦ | ¦ç G 6 DÖ Q r

lç X Î{ q h} a & s b~ Q 8ú

a | ¯} ±~ sâ ð

´{ ¢ ÷ G 1 ¦Á a| ÷ q Xæ

G¼ } ø~ ´Ê nó òñ

a{ ¾ " h h a h| c Gð 1ÿ

¯~ a~ ¦ $ G ¦ç 6 ïî í

ä hì ·ë "ö ê é ¢® n ¦ ± ° ¢® b ¤ sª ¦ % lè õ ¶ n« #õ n¹ ãô ¢å A "ä sö %ö a¤ 3¥ P§ Gµ T¤ r á 'à v 'µ x 3¥ b§ þ¸ © P§ ±µ '° q ¿ s ¾~ s q~ s b~ #} º½ ¦ a a¼ s¼ a~ X » t º s '¹ ¨¸ ·¥ b¶ v¡ ±µ '° ´ 1¨ ² ± B ° ¯® x ¥ b d¬ b« sª ¦ ¢ ©¨ n ¥ ¤ § n ¦ b¥ h¤ ¸ ¢¡ @ 1 % i G X 8 l { | P G s ¦ r w { | | X a q % s| b~ } | { z T 4 R Py @ Rx w vu ts rq p T so Th 4 n mj lk Pj i ch g Af e P " v " d # A P s X ' ¨ ¢ D & & R s # # 6 6 y xU ¡ ¤9 t7 ¤S ¦¡ 4¸ 4¥ R7 bw t§ "p #U " U 8! 9 © v 4S B7 A¸ © u t "F 6U sr TU qp RS 4¥ G7 hi )© R h¥ ¤g f7 "e fU "e U ! d bd d cW bS a` GY XW VU A§ TC ¤S 4¡ $7 4 4¥ 7 #0 R7 4© ¨7 4¥ Q7 Q2 © P§ IH GF ¢0 ¨E ¨E E DC ¡ 4 B7 ¤¸ ¡ A( @0 '9 © 8 ¨7 ¥ 6 ¦5 4¸ 32 § 10 )¡ ¤ ¡ ( ' &© % $ ¸ # "! ¤ § © ¨§ ¦¥ ¤¸ ¢¡


uÑ 1ß fø uç eÞ tÖ fÄ tÁ fÈ ¥Ð Xß ÷ fÏ 1Î Í ¡Ì 1Ë ÷ tÉ fÅ tÔ ¡Ê FÉ uÈ 4Õ 4÷ Rà tÔ Å eÞ ¡Ä ¡Ä 4Á Fú 4Á uç "Þ 1ç fÖ ¡Á cÀ "Þ ¡ú ¡ú Fú ¡÷ ÷ wù tý ¡ø fø ç û fs l ` © ty 1z f Fy Fy C y y p p y m

e er l f "

1

d e 1z j ~ 1z } 1z ñ y ´

Q F

îþ ws þ Qæ e e 1 " Fe " j

1 e f ¼ o W 2

f



e

f ¥ dq

i

" ¥ Wy " ð¨ Fz f Fz

© }z f R ¥

d f 1 ¡ " © e F 1 1z y ©s Q # ©m je ©s © ¥r y f t

"q i gq h ÿ 1 1y fe #

a F t 1q d e Q d ¥k fe & f o

"y } f i © ¥ Fy 1 w 1z o ©o fr R dq 1z 1e © R f 1 w ¥ 1z e w 1e ¥

¥ `y ( "l jx ¡ w "l © ¥ " © d Q ¥ v © F f w ©k f e 1z ö 4 Qe uy F e 1 1z }y 1y Wy wl x f w ®

o v

w l o w fs 1 ¡ © cy Q y © ¥r F f © © Fy Qm 1 ¥ Fy © f ¡ " 1z 1y f ï F l f " x ¡

2 m 1 1 (y l f © f U ( f " " ©

" yl 4h ¥ Cy © ¡ 1 fe C " Q 1 1y x u l 1 o ¥ (y " d " dq e 1e ¥ ö f ¥ 1z t dy ²

1e ¡ Qe }z ¡ { 1z 1 o e k l

2 © wl ( ó¯ es R ae ne © 1z Fe " ¥ g 1 f " l î fí 1z 1

u g 1 ( Rs ©k }z ©m l " ¥ Wy y h e

f ü © ây nò s l uy " % fe Qy fe 1z ¾ ¡ © y

à Uà ( "l l Q ÿ ¡ d w ©k ©h

8 dþ d d q fo l F ie e ©o "y

¡ äy y fe ¾q dz u d

© k f R ¡ ¡ d f } f o F " F ©

1z 1 i ñm ( © 1 1 vk ~e

f 1y ` l Cy fe l g 1y © "l w }z

f f ©o w fo f dq # ¯

fe } f ¡ vy © 2 ¡ © 1 ¥ " d #

(k fr © (y l g } d e jy x

o ©o " k `y ` ¡e 1 y f f (e ¡ ¡ e¬

fy u dq 1e ©o ¥ "y f f ¥ ¥ Wy ¥

w ¥ y F © ( © wy u¥ e¢

¼ 1 f d ( f }y ©l wy u o 1 ©l wy f f f f ¥ Fy © y m © è e¥

¥ e f © q " q f ¥ e ¨ wô

e¡ d¸ "ô ª ì

s ¡ F dq fe C d ie } © e ym f f f f d ie të © ae (¿ }y " }z y &¯ 1z e `õ " x e "« ee © f

yx # ® w u w f Wy q e l © 4

U¥ wô é ê ©

ê eé ©¬ © fe f 1q 1 1e fe "y fe

U¡ e¬ ¥ u¥ w¢ è

wo " 1r 1q j a wo

" ¥ yz © ~e p " ¥

© " wl e 1 m F "l

1e

© ¥

el u

1 f W 1z

l f å ge f © Fy (y f

vy

e y do



Fy fr

1

wy o » y ¥

U y

`y ( áe

y ½y

y

dq f

1 g

ay

¥

l } l © " k fr 1z f © 1z f f e w l f f f f f 1

eq f " u ¥ 1y ©o y 1z

ay ( s " yh © j Q 1z ä f % l Fl © ye Qy 1z e u w " ¥ ¼ s 1 f

" d wy vz © d © 1z ¡ © (y d z h

fy ©l © © ¡

F 1 d Ry Qm f 4h 1e u e 1 ¡ 1

©e ©o y d ¡e x ¡ © Fy f fr © Fe 1 f ©k e © © ~y y Rz " yz iy ©m e ©m &e ¡ F " dq fe Fy f " "k f w ©k e

e¡ ¸ Uã e fr v k 1q 1 f 1 ¥ 1 4h Fe Q dh f ¥ d e 1 f y Fo f © ¾ l 1q wl l wl

Uô el 1r (y y " t wo 4 "l " dq f

¡ ¢ ©e 2 fr a ©m Ry " Qk f f w Q 1z |h }y © d ¡e Uà f w ¡ 1e © e e ¡

¥r y ¥þ ¿ 1r © © e

w q Fo dà ¿ 8 ws wl e 1z f Q 1z | ©m Qe ¡ " wq m U ¡ Fl © e fe 1z | 1z y h 1z n "l wy tk © e ¥m ©o 1y 2m

m 1y q f

f Q xþ t " l 1 % © 1y }z l ¨ s l F © ¼ Q

F © e fe " }z Qe fe ©l y s w {k 4h © ® e ( F f i

ym ¼ t ( ¥ h d 1e ( 4h fr & w ¡

1z C ( F © s l f ¥ © wy 1z & 1e | ¥ ¡e C 1 Fe r © Fe " { i

© m " " ul ie Fz " 1z ( y " wq e Wo nk 1 d " }z

©s Q w o ¥ 1 Q ( d Fq ½ Q © Ry |k } © " F f f x |e q w f f 1 u j ~ Q gk l e fo g ¯

y ©o © " fe }z "l © © 1 Fy e d (e do ¡e f g e fr "

dy Fe " Q Rz © {y © s f 1 w ym ¡ § r y ¹ f ~ 1o

Q ¡ e F " d e w }z ©k Qe F " © }z vy §h f

Fy © 1 ¡ ¡ © ö 1 ¥ fe t wo (k fs i o ` U»

1z e y © Fy w l f ¡ Ry f " ©s o y " 1z l © Q ¡ F k f gk º ¹

( { © Fy k ©o y 4h { y © Ry dq ¥ (y ¸ w¬

y o m U¸ e¨ ¬ ¥ w· ¬

©s 1 f f Q d fe © e Wz C ¡ ` u¶ y fe © e a dz " #y ©m e d e 1 ¡ © Fy |m © fy W 7 " d 1 ~y © e m wo ¥k 1y f 1o f wµ 1q ~ l o W ¥ Wy ´ d¨ P² ± w° ~y ¥ "y 1z a Q " Fq 1 © ay X &¯ yx j j ® d¬ "« w¡ uª e§ © e¥ ¨ "¢ § ¦ e¥ U¤ u¸ i¢ ¡ (l e 1 © e o l W w k u f ©m

U ©o



¥

¡e gy k y fo ©

Fy 1z ¥ fy

f Q 1 ¥ }

wl ¡e do e m F ¥ y x u y

fs w f f f 1 1z i k l © fr © (y | 1 ¡ w ©k e }z ©s i f 1 1z & f 1z 1 ¥ wy j u # F f f s "o Fq e ©o fy w e a ©s `o wo ¥k 1y " 1q x vy "l W x fe ¸z fs ( © Fy 2m e

F ¡ 1 w n f f d e 1 ¡ fr v

¥ l ao ¥ "o wl "l ©

© © Ry Fq

}

g Fy d Qe ©r ©e 1z " k Qy Q y f ¥



d { 4h fy y Q 1z j Wy W

¡ ¥r f i F © f 1r Ws fr (y



R

` 1e "

~ 1r

f " fe ¥ ©s

f f Fq | "y yz eo

¡ © Fy ¥ i © ¥ y Ch Fr " eq

wy Fz f © 1 gp

j 1 j ©m ( Fo

© fe e © y

¡ yz F " nm

f f fs dq Fe © j f l f

l m f Q © 1z 1z © {e 1 ¡ Q y " ¥ y

i Fy ym o 1z i %k

f f © ©o "y y ¡ ©

"l 1 ¥ Fq " " fy j

© 1y ~q Fq f

e ~ s (y j f f dk ` ¡ 1 fe f j 1 ¡ f ¥ wy l © y d © e © f " u x i f

l f ex u f 1 d y F © y © e o Rl © m ¥ (y fe 1 i

¡ © f 1 1 1 Qe f f i }m w 7 w ¡e j ©

y

1 j "y "y q ( F f Ch Ry m f f f ¡ d

Fy f " Wy ¡ w 1e F f ¡ ` f 1 ¡ u " ©l 1 § U r ¥ "y 1 ( fh " g

1q m o f " f ¥ 1z q e "l wy Qk F © © uy 1z fe d

q © Wy 1r f f 1z d y fe f wo k d F w ¥

1r U e m f f f w j |y ` l e 1 ¥ wo " z m 1 e l R f

" W l f wl f 1 "l © w 1 w Fy " " ¥ wo ¥k 1 © uy Q F u F f f ©

d ¡ © Rz 1 q p u ©o o ©o "y e 1m f f ( 1

e 1 ¥ f w F ¥ ©m 1 ¥ 1y 1 t t y fe 2 f i q vy ¥ y

Ry f k 1q y te (y Rz Q 1 " wl © fe "l } i u ©

" Q jq "y 1 w © Qk © 1y

d f 1r ¥ © (y f yz © 1 F f l "o U d 1

`o o w 1 dq ¡e t

u 1 l w 1q d e d i k x d d e o "e 1z F "

¥ (y y 1z x | 1z ©s e 1 w Fq e 1 ` | " i

d fe y 1 ay y e o 1z } "y s © ¥ (y ¥ " fy { }z f u 1 2 " f i d "l ¥ Ck d f © ¥ ¥ U Fy © 1y e 1 1 y

1 f u " u z h e © e x

©q h X 1z © k ©o Cy ©o y Fz ¥ Fy f x

wB s uv Ws uh ts Cr qp ib ¥h Wg fH RD eG dS cb RE aD `Y XH WV UT 7S RE QD PI 4H G FE 1D ¥D CB A

¥@ 49 8


ay FE aW Y `h cY PA rQ RY VQ aS PY `s DW ¤s

cY PA W 'W ¼S ¨p Fp #Q mY 'p rw ¥C 'Y RQ ¨U

6E x eY pS xw cY PA Q Fs Vw ¨S DE 1Q 7 i '0 4 ¤Q `w PC PQ cY ¨U Fp pC eS S px w eY `¥ 'I FW RY VQ FC 'W ¥S 'W DS ¥S cY

àw pS DC fY Fs C ¨x aE I p DC

¦Q

¼Y

DS Rx

Fp DC vw BA !C U eY FS DS 6s

Rx 5f S Fs FC af pC DE Bw BC aE pS PA aS Rx pA `x

`o DC af PA aE no RY `s eo 'w 3Q

pf cY `Q !C FY FC PQ 6W c¥

ay aE 'w 6s ¡ 5W DU Vw bS Fs

'f af Rx ¨Q rð 6 '® ns x ï¦ `¥ PE 6s `x 'Y Rx eQ RQ

5C eU Rx vQ nw ¸u ¸y `Y vW u x FC 'W HS 5E VU ¸S e¦ C Vr PS

5S d eY aE '} u Ff pW vQ RY PC nQ ` PC 6s DE s 'C

¨Y }$ î 'w x fE au PY `Q ¨C `x PC 5S

DY Ví RY `w 'W Dw Df 'f qQ

6Q pC Rw pS ¦w PA `Q ¡ ¸¦ æ Hx vw DC mf p pC FQ DC ¥U Rx

'W DS PI PQ `w C as ¨S qp ¨U 'p PS aE o as PY Pw Vw ¢S ¥E Rx Q Df PA Fs gC 6s DE I Rx DS vS ¼u DY PA ql 6s `x vy vE Fu 'C 'Q cx Rx 3Q RY pf Vw Q DS ¼A

`s W d af `Y 5W p a pS eQ `Q PC mG Fs 5C cY ¸S s 'Y a

Fu 'C PS PY !w xæ 's ¨S `x PC ¼Q as PA Q PC VQ pS pS 6E ¥s cx

aE 'Y 6E ex DY PA ü PS VQ ¥S bS Rx Rw RQ ex ñp Bf

& ap PY cY PA Rx ¨Q `Q pC VQ ef ¦x Dw P 5f ¤Q V¥ ¨S E PY ew 'w ¦x P

ex p Q 5p PA 5S pp 'w vw cY 'Y 6C v¥ ¸p ¸E vw 'Y

¼w c¥ DQ 'l af `Y 'w 'x cY PA gQ Fs C Ds ¨I p Fu PC ¤w Rx vw RY 5E `Q

'C PS fY PY qw FC 5W ¤S PY `¥ 4 nQ 'u 6s PC PS 'Q PY 1Q as ¼C 6s VQ Rx DQ ¤Q `s af Pw Dw ¸f Rx Dw Du !E S öE

Fs C `U DU 'W S Fs !C `x Vw cY ¨S ¨Q FY ¼d

Pr u vC au VU 68 PE VQ qS PE PA rQ 6p FW PC !ð qy

'y 6s ~s `Q PC ¨4 Vw ¼S PA TQ vw fY Rx ¨Q PA òQ I 's ¨S 6p Rx

'p ex D¥ as RY cY PA RY FE ¨C cQ 5I U þh ih ¸C 6p p cQ 'I rS DE vw ¨x 'y 9 #S s vS þx au qw u

ó cy Rw VQ Px xw Df 's `s W pC 6p X« XS fY pS

a Df as 'w RY DE Fs ¨C gQ D¥ ¨S p w S W DW xI

Px

xª a X µ aS 'C cY } Dw

'u

E

DC aS

1Q

G eC S #S

¦Y

'W

'w

Rw

3Q

6s `x 'C PS 1Q Fs 6C PS 6E RY RQ E eu cY PY ¡w cY Px w PE xQ `w u 9 Rx BE v¥ PY tw Rw ïQ 'w #x Df gx ¢C Rx Ff 6W è vw Px cx

& õ

Xy

qy ¿ co

o

1Q

eE PC

!A

Rw

6I ap

5W VU PA vl Pr 'f

'E

BA BA BA `¥

fx

pp ql

eY VQ vI vu 'u 'Y ( 10 Pu RY Q eE PE cY 's DS ~w vy aE eY `x ¢w E PA qQ TS PA gQ xw 3Q s 'C ôå y 5f Rx af RY DE FW FW s VQ RY pS

'w ex D4 ( pC E vî Ví x vw Y ¸S ¦w ìw RQ VQ 5S Ps 'w `s PW nY Du VQ ¸S 's eY 'p PY Vw Vw au 6s u ah px 3s f ¸S pY nx Dw af 1x & ¨x

DU

¤A

q´ ¨¨ ² D ¦ © `Q XW Bt 'w x Fs DC 5s PI Q RQ 6E ¨x p Fp pC w ¡

as eY ap pY cw Fp rC cY !A 's vS ¸u PE vQ RY 9 ¬ cY 6s `x PC VQ pS Rw RQ ìx 6s `x PC nQ vw fY VU pS ¼w ¢S 'Y & fx Vd y Fs 6C fx gU af E s ¡ 'y s af RY VQ aS PY nw Rr 'E ¥S p y af cY Fs ¨C cY 6s ex 'Y & Fs »C 's TS qy af cY Fs 5C qd 6p 'w bx ® ¨

PI 'E aS 9 'y fE Ví rx PA zQ 6C v¥ PY ¸S ¦w w ê 6s S aE nY Dp PA FQ PY Vw pS Rr ¼E cY u VQ XS S 'Y Vr vw RY vQ Vd !S f aW 5Y af RY FE FC nx 1u ql ¸E vw `Y FC PW

¨p V¥ fY Fs ìC ¤w cY PC `Q pu cw pC 'w cw Fs PA qQ § ¨S DY f E aW ¥t 'W ¥S af PY cQ 6I

RY VS Pr 'u 'U nx af PY PA Q PA Q DC 6s '¥ 6I Rx 'x `¥ 'W C s 'w x v DY p c¥ Y ih XC VQ mS pp 'w FE FC 'W ¡x ¨Y

pS Dw 5S tU aE `Y aW 'w Rx RQ l v® à nx au PY cY FE DC gC ~s 6ã ½ #s ¥S zQ aC d tU v cx ¨S 'w mY af RY s pp ap PY

nQ ¨S as Dx Rw Q

¸S pY 3ÿ 37 c¥ Fs vQ RY qE PA TQ 'p ps vw RY 'w §x s ¨d PS PQ vw ¤å bä S aE gI PC PQ gE cY Ds Fp cC pw Vw vS ¸l X nh Y 'Y

p 'w tx 6s `x cY PA uQ PA vy nQ au RY G 'd cY PA Q c¥ s v xY w FE qC 'W PS af PY vw RY RQ FQ RC gU ¤S ¨E pp Rx 1Q as 'Y 1 Fs éC 1Q 's vS Xu it DC 6s Ds ¼I 'w x G ¨S ös `Q ¥C pp 'w ¦x Fw ¸S ¦w ¥w af RY nQ aE vY `á PC àE Df qS DE f 6W cx PA $ RQ 'E aS DU ºS 's #S cY qd 6p nx eu cx cw 6I fx 3d Bw Rx eQ a½ VU Fs 5C ¸A ap PY

6A

PC nQ au !C ¢ ex 'f 'Q Rx ¤Q Fs 'w xx Pw 's F¥ PC vE ¥p DC Ds 'u pS Rw 's ¡S aE PY cw `Y W 'w ¹x cY `¥ aC af DY 's

RY vQ cY af pY 6A `¥ pC PY tw cY PA TQ aE PY vw fY U aE 'Y af nY PY Vw #I S DQ PI vl 6s PA VQ D¥ `x PC PA 5f DY aW vW u cd DE ¾Q S 6s Q ms aS `Y

cY PA gQ cw vI vu u d 'W pS ¸Q PE PQ 'w x `w PI VQ aS as cY PA Q Vr ¨S p DI af pY ew pA u DC & Dx PA 1o Pr Vw DS Fx PC VQ PS 3Q Dp I Fp Fs C & DS VQ vS Fu C 5W 's S l 's Y ih 5C U o `s W 'W DS

Rx !Q #x 'E þS 1Q as nY Rx aE PY 5S A ¹w 6s Q q FE DC BA Rx FE 'W D 'l `s FW 'W ¼f cY PA as `Y ¸C 'w DQ 'U gx PE nQ VU tS FS DC af eY { $ f± 6s `x PC DQ

'f aS FY vl aE nY S DQ `U cY 5f Ds ¨p ¨Y 'p ¨ PY Vw Rr #E Fu 5C U Q Rx eQ vl aE cY !A Y cG 'd cY PA rQ ¨p { $ Fs 'U ¡x pY

eS

6s Fx pu Dw 6I D¥ Fs DC nw pu E bI FE BC nx uu ¦w uw x c 'l Ps cY PA gQ ös Q VQ af `Y FC VU DS 9 » 'y ¨x 'w x vw RY xQ c¥ s gC 's aS Vw HS aE

w PC qI

!w vU PE c¥ p 's 5W eU 6s 'Y ` Ff 6C FE vy PC VQ uE Pu VQ cY PE nQ xs `w PC pA 'u § & vQ eY s BC XS e 5U þE 1s cY #¸ DE eY eY 'p

DE Vy Fu `w E Fs u 'C ap ¸A aE PC 'Q vw as nY !A 6I 6C af 'C pS ¥S Q ìE au 'd Ff Fs tC v 1· 'Q Pw eC `x PC vE & ¼p « ih 5C ¤p PA ¨Q

'w qx ! 5C PA C Pr âQ `U DC 'p pS VQ PS DY ¼f Rw 1Q FE DC nY ¸u cw Rw RQ FE `Y W p Rx RY G as DY tY x m 6p Rx pE 'w Px af 'Y ¨S FE DE 6s 'Y ¨S H· aW Y cY ¸S w e¬

5A #Y Dw Rr VQ vS fx Vd FE C a¶ U DQ ¡ m«

PC eY 6E qp cY Vo Px cY RY VQ PA `Q `s DW vQ PY Dw DC 's pY 'E aS « ¶ xS w 'Y Px 'f 'f aS vl FE W 6s ¨p 6p 'ë '} aE PY cw c z #U pu cw ¨S eU cY cY cY 6p Rx 3Q as ¥µ aW Y S 'w xx cw Px ¡E cY PA aE 'Y

5E as ¨x fx U ex ep s PA gQ 6s ¼x RY aE pA ¢E cw PI H· 1Q Fs 'C af Rx zQ pE vw cY 's þS ex ¸Q 6 Dx PA xª nY Fu PC VQ p !C ¨S ¼p u `x gW tS ¨S ps 'w D 1s fd 6I mx Vd x c

ih 5C

f PA Q vY á 9 s x S PC E p 5 'w x U `Y W A xS w nx u $ PA Q X Rx E RY Q 9 9 9 PC E 'Y ' ª U V° ¯ 6 ¨ª

'y cl c¥ Fs aC vY RY E 'l `Y 'W vS Pu cE aW Y ih 5C 6U vl PE 1Q as eY Dp ¸I Rw RQ DE Fs eC af PY Vw ¸S ¦w cw s ¨C 'w ¦x §w & `x FW 'W S Rx eQ af cY af vY cY s 'w x vY PY 'w v¥ DY f eS Rx E ql Df Fs ¥C rp Fs bC ¤E b B¦ v¦ PA `Q C ¥ af cY 6s F¥ PC aE cY f PY vw Y b E Rr 'E PS ¤Q eY 6p cx f Rx ¸Q E Rr 'E PS uQ 6s `x PC VQ vS Fu FC 5W 5U VU S cY PA Q FW 'W vS ¢u `s W 'W DS PI nQ 'u uS ¸A Fu DC !A q PE DQ `U pC nw pu E pW vw Y

`Y 5W eU aE eY x ¡ cY 'y E vy !

'p Fp Xy Pr PA Q

cS nh BY PC vQ eY 6p 'w x ¤ PY Vw #S

al vw FE C Q 'w ` PC

RY c¥ bx FQ ¨C

X ¦ ¦ z V e H 5 e H c 'y eY 'p pS xw w cY PA Q Fs DC PA `Q C B aE nY pu cw 6I Fu 'C PS 6E ex ep af PY vw RY RQ FQ RC DG 3Q Fs 6C fx HU PY 'w ¨x qy 6s `x `s aW RY VQ ¸S vw cY f ¨x qp 'w xx w af cY Df as RY 1Q Fs eC FE Do cd PI BE `Q BC VQ DS PA !Q DQ vU nY u nh Y ml 6) D4 ( V2 j qy 6s `x PC VQ ¸S Dw `d FC 'W vS #u DY PA bQ aE `Y XW gt Df '% &% $ Px BE E ¡p 'w xx PC VQ ¸S Dw uC Df 's 1 §k 's gS Rr Pr 'E ¨S p { |S 'W vS gu 'l ¨Y cj i qp aW `d FC S D 'E ¨S pA 6p 1s Pr 'p pS 3h Y ih Fu 5C Px xw w #E ¦w tw §g 5C gU !A VQ cY Pr f 3( T 3Q pC Vw §S ¨ aE `Y XW qt PA Bt ~Q ¡ 5S uS 's DS PA Vw FS W ¨C Fp PA bQ aE `Y XS bQ Vw ed 'f XS
4Û tÜ

's S S aE `Y XW vf Rx bQ ed cY

TS FE eC Df 's S y m} l qQ vw cY PC TE FE FC XW DU VU

PY vw cY BA 9 ¨E pp 'w xx w |{ zy ¡ PA VQ pS tw s TC Q TS RQ DE PI HG ¡
uÚ vÙ

1s DC BA aE nY Rr rE FE DC BA

Rr E 's FS 5W 9 pu Dw BE 3Q cY PE nQ 1( 1) 3( 7

cr e 6I Rx PA qQ @9 18

d x 1 8 s w 'u Q

'w 7 'C xS pS Rw § 0 6)

5 8 54 32 10 ) (

#" !CÂ × 1Ý ¥ eÜ Ó © ¨¤

§¢ RÓ ¦¢ "Ú × ¥¤

4Û tÜ ¸¢ §Ü fÆ Æ ¥Ý

u× Ù Ý 4Æ eØ `Ç 4Û Ü (Â Ó wÆ jÓ Ò


¦» 3þ 2¨ ©§ ¤® ¿ 8¾ 2² '¨ 8¨ ¼ 2¬ 2¨ 8© ª½ ± ¼ ª¨ » ¨ ª¨ 2¬ 'º 3¹ t¸ · 3¶ z¬ &µ ª´ r¨ ® '² '² z° 8 z° § ¤® 3§ ± '° A¯ ¤® ' ' 8 '¬ r¬ I« ª© '¨ ¨ § ¦

Q

% $6

26 3 8% ¦% Q $) " $6 ' E % 5 ¦¥ 8 % x ¸( 4 p× 3% "% # w % ¸ "a ¢ p× %

` ¸) ¤ ¢ v D 4( " I U ¸( 4 p× 3% ¤% # w 4( W DÝ ( PÚ aÚ ¤ ¤6 26 ¸ I 4( 5 ¤ 3Y ¸% ! ¦§ 8 ¸% 5 ¦C % ! Ú "X ©6 F× 8 ¦% 3 e§ 5{ ¸( ¸ ¦a ¦ 3X ¸ $6 4 P× '§ ¤ ¤# 2¢ s 3 ¦§ x ¤ 3Y ¸% ! ! ¸§ h¡ % ! Ú "X ©6 F× 8 ¦% 3 e§ H{ ¸( ¸ ¦a ¦ 3X ¸ $6 4 P× ¦§ © F× D ¤¥ ¥ B 2¢ D B( 86 "% 3# § s u P× 0§ 26 4 v× e g ©F ¨× ©) P× ¤§ V¥ u ! t§ DÚ $6 4( ¦ 3 % ©6 5× ( 'ø ¸ 2 û " I U ¸( 4 ¸× 3% "% # w ¤ 4(

I &( v ¤u c " "a ©6 D× ¸Ù 8 ¦% G{ % " ¸Ù 3 PÚ PÚ i D× # s s j Ú P× Ú ©Y ¸ ¤ 6 v 3 ¦§ ¤x cP w s c Ý ¤u c ¸ PÙ § ¢ " PÙ v§ ¸9 E ¦ 8 % 'û û 0§ 6Ù 4 I gw 86 % 5 0§ 6Ù g ( $6 ! § cx tw ¦§ 8 ¸% 5 ¦C v 2 ¤ aø û &( q p © P× ¦§ 8 % D g I (

¸ D¥ ¸( 4a p× ¤¥ ¥ V¥ u 4a p×

c

!C 6Ú 6 × ¤) Q v w ! § 3Y %Q

3 V% ( ©# $ ¸ 4( 8¢ ¸% 5v 4 I ¤¥ v ¸) ¤ 6Ù ¸% ! ¦§ 4(

B ¸ D× PÙ % ¸ r " PÙ tw v E Gv F× © ! 5Ú $# 1 2 û c¨ FÚ v 2( 39 % cx ¥ h ¤a ©6 ¦ 3¨ % P B(

" B( û § "a 4( "§ û w 8¢ ¸% 39 PÙ 2 û 2 ¤6 t E

2¢ I P ¸ ©¢ ¸× # ( 'ø r ( VC u $)

( ¸¥ s ¸ 2 % s( ¸ 2 % " 6ç ¸ B{ B( ( " $6 '

PÙ Ú PÙ ©§ P û "§ # " ©6 D× ¸ 5 ¤

3X ¸% ¨× e) v B( $6 B( $# ! ¸§ Q s( I W# D $ 4( v

e ! Ú 1 h ¡ 2( ¸¢ U " 2(

0 3Ü Ó e Ü Û öÜ f Ü s x w hv s Vu !§ aÚ ! § ! § 2¢ ! DÚ " PÙ y§ "X ¸6 ¤ PÙ § 3 FÚ ¸ Q aÚ ¸ ¦a t 8X ¸ I ¥ ! § PÚ ' ©Y 8 ¦% © ¤ # © P× 8§ ¦% I 0¥ 2( pÚ % 1 ) ¸) 8 ¸% ¸a 8 ¤% @¥ ¤X ©6 F× 8 ¦% !Ù " © $) r 9 ¸6 " ' E BÙ 86 % ! 1 P t ¤% § 26 ¸Ù E§ ¸ e¢ "C ¸ DÙ ¸6 ¨ ¤¢ PÙ 3 6Ú 7§ 26 1 lf q 3X 1 h ¦¥ r 2 ¦% ¦ ¨ % ! § Í 0 I V 26 $) 2 5 2) " 1§ 5× ¸¥ c§ 3¥ 5

§ T ¥ 'd ¸Ù © D× B 2¢ ¸ 2 û ¸9 $6 © W " x¨ 3

¸ '§ 2 5 2¢ " 6ç !§ 6Ú ' ¤ ©¢ ×

P× '§ PÙ ¤% q¥ uÙ

6× 5

$6 1¥ ¸ q{ ¸ ¢×

¸ 8 "

" !Ù 2) 'Ø z DÚ # ©% D× 0# !X 9 ¸ 2 P×

i " !× ©6 P× © P× PÚ

$) " ¸% PÙ 3§ f !§ § ¸6 DÚ aÚ ¸ ¸6 9

3 % !Ù pÚ DÚ ¸% P ! ¸ § 3 " ¡a

3 ¦§ ~ PÙ § $6 6 % $6 6 u q cf

5Ú $# 4 p× 8 % x t Ó t9 ¸ ¸ 3 }% 1 ¸ ¤ "a ¸X PÚ § 4Y Ý ' c ¤ 8 % ©6 × u s cf ¦§

û{ 3 Ú ¸ a $6 ¸9 Ù f ¦C 8 % x s Ø

" PÙ 4Y e pÙ ¸ w

v§ 'Ú ¤ 3X © 5× 0# q| $ 3 I% ¤¥ v s

$# 1 E cf 1f ¸% 6 FÚ !× p× 3% "% ¤ ¤6 A# c§ ¦§ h ¸§ " aÚ ¤¢ '§ 2 I ¦¥ FÚ Iu ( 0§ t 26 c

" $6 ( DÚ # 9 B( 2 " e¢ # w{ ¸¢ Ú 3X y6 " # ©| D× j &( 'b 3 G% D× BÙ ¡Ý 26 1 ¤)

2 3 'Ú 3 ¢ ¤6 & 0§ ! ¸ 8# !%

@Ý !§ ¦§ ) !¥ qÚ © ¨× % " 2 ! 1 'Ú 8 ¦% q 3§ DÚ

2 " I c¥ 0§ 26 " 5v 7§ ©6 $) ! PÙ 4§ a× q§ ¤¢ ¤) 8# !% ¸Ù f § ©6 × pÙ

¦§ ¸6 !§ ¤ ¸9 ! ¸

B $6 1 I $6 5 V ¥ B aÚ @ 5Ú ©6 3# Ú ¥Ú 2

F× I ¤¥ ¦¥ y) 2¢ ! '§ 2 5 ¸ 'd Ù 4 I s E f § BÙ Ý B 4 I ¥ ¸) ¨ Ú ¸ ¸X ¸ ¥ ¤ PÙ 3 sf ! Ú ¸ ¤a ©6 D× 4C c× 'd I b 2¢ 3 v% ¦§ D× " ¦ " ¸( ! D r§ ¸9 ¸9 5× ¤ ¤# 2¢ !

4 P× ¦§ ! § ¦a e $) ' vv ¤ PÙ j§ 8 % ¸ ¦a ¦ 3X ¦% c ¸6 h sY 4§ F× $6 4 P× '§ ! §

# 26 0§ 26 1 3 § G ¦ © ¸ ¸X e¥ 'd $# ¤ ¢ 'Ú 2 ¸6 © P× e 'd g 0¨ ©6 ¨× § aÚ ¨× $) ¤¢ ¸6 3 % ! ¦§ 3 ¦§ ¤ ¸¢ 2¢ " ¢

" !§ ¸Ú 2 ¸( aÚ ¸

GC ' ¤ PÙ ! aÚ C 1 " ¸# § ©) P× $6 % 8 ¸% ! 6Ú ¦a

¸ z¨ ¤ ¸6 ¤ ¤X FÚ 5× lC % ¸ FÚ ¸ 2 cf e 2 aÚ 2¨ ¤ 1 $) !% !§ 'Ú ¤¢ ¤6 aÚ " 5 3¥ "% t 8X ¸

¨Ù 26 ¤ § ¢ " ¨ ( 5Ú $6 4 eÙ G# ©¢ × I# I W¥

f ¸% 1 z¨ I¥ ¸ ¸

¤ v¢ "a 6 P× Q $6 " PÙ § ©¢ ¤ $# 2 3 'Ú 4 P× '§ ¤ 4Y ¤ 2¢ ! ¦§ © 5× ¸% e " ! " 6 ¸9 ' I 8 ¤% 0¥ 2( 8 % " 3a ¦% ©

4 P× PÚ 3 q ¤6 A# ¸ 2¢ ¸( }§ G ¸6 PÚ 26 ¸ ¸9

!§

¸ 3 ¸%

¦% 8) ©¥ v× ¤ ©¢ ¦a 8) 6Ú ' Ha ôÚ ` "a

¸Ú % 1 1¥ ©) × mÏ uÜ mÐ t¢ % 8 c% © © § "a 3 !% § 'd s " ¸6 3 ¦% ` 0§ ©6 u× c 6 xf " t "¨ % 5 ¥ h ¤ ¸6 I ¸¥ 3§ FÚ P× DÚ

tf © I e 8 FÚ D× 2| 'Ú 3 2) 4X F× ) % ! 3 g% DÚ 0§ ¸6 r 39 ' ¸y 4 I ©6 P×

¤¢ ¸% r ¢ ¸¢ g " 26 5 E¥ $6

PÚ ¸ PÙ ! % '

$6 3 !% !§ 'Ú c9 2( % 5 xÜ n r ß ¤% r# t9 ¸% aÚ ©¥ v× u !9 XÚ ¥ 1 ¦§ ~ ¸# W q ¦a ) × 'Y ¤ 26 2¢ " W6 4§ × 'Ú ¤ ¦X 3 § ~§ ©6 × 7§ ©6 '× ) " PÙ ¸§ H ¸6 I PÙ

© v× E gÙ ! § ¸ "a aÚ aÚ ! § %

§ Y 4§ ¸6 ¤ ' ¤ DÚ # "

F× © X× pÙ } ¤# 2¢ s PÙ ¦§

§Ü DÛ ¸Ñ &r öÏ If qß qp 4 Io xÜ Hn Im ß Ü Æ Û Ü Â eÏ lk ji A &Ò hg If ¨ß D qß ed I ¥Ñ D ß eÛ Æ ¦% ¤ 4 P× '§ ¤ $# 2¢ 2 p PÙ I§ ¨× "i 26 4 v× PÙ § ©¢ "% # ¤¢ !% ¤§ ¤ P× '§ 3Ï $6 eÚ 8¢ $6 ©¢ 1 '§ " PÚ 4§ 2 ¸% 3 ¤¢ ¸6 3 2 3 3% ' h ' ! DÚ t# ¸C h ¸9 H ¨Ú aÚ 3 ¤% 3% % !§ Ú ¸% ' ¤ 3 ¦% " PÙ &) 3# 'Ú 2 0§ 26 1 " aÚ " ¸Ù ¤¢ sf r§ ¸9 g§ ©6 D× PÙ % ! G§ ©6 1 0) ¸( 2) ¤¢ # ! ¦§ ¸6 ¸ ! Ú 4§ !× ¸× 2¢ ' & 3 ¤% ¤ ¤ ( DÚ gf 4 "% $# 3# ©6 à× ©# ¸ DÚ $# 4 ed ¸ ! 'Ú 2 2¢ ¦ ¨ # ¤ 0# × ¨ D# 8 bÚ !Ú " 1 ) ! 7§ I6 3 ¤% cb " ©F PÙ ¸ 26 3 FÚ ¸6 y q¥ PÙ P× § aÚ ' $6 v aÚ 3# % ¸6 ¸( ¤¢ 8 ¤% $# 4 1 3§ $ ¸6 2 Hß # ¤ 6 'd 4a F× ` 8 % " ¸ 2¢ d % ¦¥ 3# 3§ TS 7§ Ò cÏ

" § Ú 8 !

&) ¸% 19 ! aÚ 8 ¤% W¥ ¸ ¤§ 4¥ ¸× xf 3 3% ¦% BÙ Ý ¸ aÚ ! ¦§ 8 ¸% "% 3# 3§ % ¦§ ©

PÚ 4§ '% 3 ¤ W6 " ©# a 5 §

¤ 8# qÚ w ¸ ! 0§ ¦¥ E

¦ G¨ ©6 '× 4 ¸ ¸

I¢ ¸6 aÚ 3 % " !Ù Ý $) Y ( D ¦C ©¨

7§ 6 " ¸ 3 r% v9 !X Ú DÚ ©# ¤ 3 4§ P× ¤§ ¦¥

6× ¥ ¦ 8 % F !Ù vÝ ¸ 3 "% 3# 3§ $) ! ¸§ ¤ ¸6 © D× 2¢ 1 h) " ` 0Y 3X BÚ PÚ '§ 2 FÚ þ× Ú D× 3Y !% Y ¸ ¤ # D× 3# ¤ § 1 !X ¸Ú e¢ ¤6 ¸6 ¤Ú ¸¢ ¡

¤¢ ¸6 % 5 ¦¥ 5Ù `¥ 1 h) PÙ H§ © p× 4 2 ! 'Ú BÙ Ý

! ¦§ " PÚ '§ ¸ !% 0§ B( $6 DØ

0§ ¤ 8 PÙ g§ 8 26 ' © Ç &Û

" ¸ ¸6 h "C 8# ' W ¤ ¤6 zÜ XÐ

' p× PÚ "§ V PÚ 3 ¤% ¤¢ 1 A# @9 ¸¢ ß DÏ

4 P× '§ 0§ 6Ù ! ¦§ 5 ¦¥ g 3 "% VU !¥ Ú Æ xÓ

P× § ¸% 26 e 5 RQ ©6 6× 5 zÑ

9 a u P ¥ XÐ &ß Ï gÎ Í Vø &ç û

ù rË §Ì XË §È Ë TÊ É fà VÈ XÕ vÀ ¸÷ Þ 6Ö Ã ¸ú ÷ mÔ À XÅ 3Ä iÖ ¸ú e÷ Á &À xÞ pú P÷ V÷ Tù ý