1 5 BEFAB
2 0 
3 19 DABFECABFEDBACDEFAB
4 NO SOLUTION
5 29 EDCBEDFAEDFAEDBCAFBDEFACDEFAB
6 NO SOLUTION
7 19 CBFACBFACDEFACDEFAB
8 NO SOLUTION
9 13 CDAFBEDCBEDCB
10 NO SOLUTION
11 21 DAEBDAEBDCFEBDCABEFAB
12 16 FAEDBCAFBCAFEDCB