2
a bb
b aa
b
bbbbbbbb
1
` aa
b
aaaaa
0
ca bbc
bca aacd
da ede
cab
deeeeeeeec
10
b bca
b iac
b acf
d bec
e bhb
g g`f
f bae
h hab
h abi
j cab
`
abaeeaabc
-1
