ตอนที่1 .........
b
bbbbbbbbbbbbbfdgdddddddddddddddd
dddddddddddd
ytjtyhtrddddddddddd
yttttttttttttttttttttt
ttttttttttttt
yyyyyyyyyyyyyyyyyyyyyyy
tttttttyttttttttttttt
ttttttt
yyyyyyyyyyyyyyyyyyy
yyyyyyyyyyyyyyyyyyyy
yyyyyyyyy
u
u
ttttttttttttttttttttttttttttttttttttttttt