bbbbbbbbbbbbbbbbbbbbb
111111111111111111111111111
反反复复付付付付付付付付付付付付付付付付付付付付付付付付付付付付付付付付付付付
11111111111111
2133333333333333
s0000000000000000
111111111111111
vvvvvvvvvvvvvvvv
ttttttttttttttttttttttttt
222222222222222