64
Abca Ab
Bab Abc
Ba Ac
Abc Ab
Abca Abc
Ab Bac
Abca Bac
Ba Ba
Bab Ac
Abcd Abc
Ac Abca
Ab Bab
Ba Abc
Bac Ab
Ab Abca
Abcd Bab
Abca Abcd
Abcd Ab
Abcd Bac
Ac Bab
Ab Abcd
Abcd Ba
Bab Bab
Ba Bac
Abc Bac
Abc Ba
Ac Ac
Ab Ac
Bab Abca
Bac Abcd
Ab Ba
Ab Abc
Ac Bac
Bab Bac
Abcd Abca
Bab Ba
Abc Abca
Ba Bab
Bac Abc
Ba Abcd
Ac Ba
Abc Abc
Ac Abcd
Ac Ab
Bab Ab
Abc Abcd
Bab Abcd
Ac Abc
Abc Bab
Abc Ac
Abca Abca
Bac Bac
Ba Ab
Abca Ac
Ba Abca
Ab Ab
Bac Bab
Bac Abca
Abca Ba
Bac Ac
Abcd Abcd
Abca Bab
Bac Ba
Abcd Ac
