T

Lv ã

ððð

uuuuuuu

uuuuuuu

uT uu u u u uuu

ððð

u u u uuu uu uuuu u u u u u u u u uuu uu uuuu u u

u u u u u u uu uuu uu uu uuuu u u

u u uu uu uu u u u uv uu u u u uuu uu uuuu uu

ððî

u u uu uu uu u u u uv uu u uu u u uuu uu uuuu uu

u u uu uu uu u u u uv uu u uuu u uu uuu uu uu uuuu uu

u u uu uu uu uu u u uu uu u u u u

ððí

u u u u uv uu u u uu uu uu uuu u uu uu uu uu uuuu u u

ððì

ut uuuu u uu uu

uT uu u uu u u u u

u u u u u u

ððë

u u u uuu u uu u uu

u uu u uu uu u uu

u u uu uu uu u u u uuuu uu u

ððê

ððé

u uuu uuu uu uu u u uuu u u u uuu u u u uu u u u u

x

x x

u u uu uu uuuuuuu uv uuuu uuu u u

ððè

v+v

v v

x=u

u

u

u u uu uu uu u u uuuuu u u u uu uu

ððç

u x uu u uu uu u uu u uu u u uv uu u u u uuuv uuu u u u

â â

ä ä

u u uu uu u uu u u u uu u u u u v uu u u u uuuv u uu u u u u u u uu u

u uuu uxu uu uu u

ððð

u u uu uu uu uu u u uuu u uuu uu u u u u u u uuu u uu uu u

÷ ÷�

�õã

v

u u u uu uu u uu u uu u

ððð