2
a bb
b aa
b
bbbbbbbb
1
b aa
b
aaaaa
3
bb aab
abc aadc
ad dee
bac
deeeeeeeec
10
a bca
b bai
c acf
d bec
e bbh
f fag
g abe
h bag
i aaj
j bbb
a
abaceaabe
0
