bb 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
bba 1 2 3 4
bbaa
bbab
bbba 1 2 3
bbbb 1 2
bbbc 1 2
bbbd 1 2 3 4 5
bbbe 1 2 3 4 5 6 7
bbbf
bbc 1 2 3
bbd 1 2 3
bbe
bbf
bbg
bc 1 2 3 4 5 6 7 8 9 10 11 12
bca
bcaa
bcab
bcaba
bcac 1 2
bcad 1 2 3
bcb
bcba 1 2
bcbb 1 2 3 4
bcbc
bcbd 1 2 3 4 5
bcbf
bcbfa
bcbfb
bcbg 1 2 3
bcbh 1 2 3 4
bcbi 1 2 3 4 5
bcbj
bcbja
bcbk 1 2 3 4 5 6
bcspr
bd 1 2 3
bda
bdb
bdc
bdd
bde
bdf 1 2