2
a bb
c aa
b
bbbbbbbb
1
` aa
b
aaaaa
0
ca cbb
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 bai
j cab
`
abaeeaabc
-1
