12
1 abaaaaacaaaacccccccccaaaaaaccccccccccccccccccccccccccccccccccaaaaaa 2 abaaaaacaaaaccccaaaaaaaaaacccccccccccccccccccccccccccccccccccaaaaaa 3 abaaacccaaaaccccaaaaaaaaaaacccaacccccccccccaacccccccccccccccccaaaaa 4 abaaaacccaacccccaaaaaaaaaaaaaaaaacccccccccccacccccccccccccccccccaaa 5 abacaacccccccccccaaaaaaaaaaaaaaaaccccccccccaacccccccccccccccccccaaa 6 abcccacccccccccccaaaaaaaccaaaaaaaccccccccccclllcccccacccccccccccaac 7 abccccccccccccccccaaaaaccccccccccccccccccclllllllcccccccccccccccccc 8 abaaacccccccccccccaaaaaccccccccccccccccaakklllllllcccccccccaacccccc 9 abaaacccccccccccacccaaaccccccccccccccccakkklpppllllccddaaacaacccccc 10 abaaacccaaacccccaacaaaccccccccccccccccckkkkpppppllllcddddaaaacccccc 11 abaacccaaaacccccaaaaaccccccccccccccccckkkkpppppppllmmddddddaaaacccc 12 abaaaccaaaaccccccaaaaaacaaacccccccccckkkkpppuuuppplmmmmdddddaaacccc 13 abaaacccaaaccccaaaaaaaacaaaaccccccckkkkkoppuuuuuppqmmmmmmdddddacccc 14 abcccccccccccccaaaaaaaacaaaacccccjkkkkkooppuuuuuuqqqmmmmmmmddddcccc 15 abccccccccccccccccaaccccaaaccccjjjjkoooooouuuxuuuqqqqqqmmmmmddecccc 16 abacaaccccccccccccaacccccccccccjjjjoooooouuuxxxuvvqqqqqqqmmmeeecccc 17 abaaaacccccccacccaccccccccccccjjjjoootuuuuuuxxxyvvvvvqqqqmmmeeecccc 18 abaaaaacccccaaacaaacccccccccccjjjoooottuuuuuxxyyvvvvvvvqqmnneeecccc 19 abaaaaaccaaaaaaaaaaccccccccaccjjjooottttxxxxxxyyyyyyvvvqqnnneeecccc 20 abaaaccccaaaaaaaaaacccccccaaccjjjoootttxxxxxxxyyyyyyvvqqqnnneeecccc 21 SbcaaccccaaaaaaaaaaccccaaaaacajjjnnntttxxxxEzzzyyyyvvvrrqnnneeccccc 22 abcccccccaaaaaaaaaaacccaaaaaaaajjjnnntttxxxxyyyyyvvvvrrrnnneeeccccc 23 abcccccccaaaaaaaaaaacccccaaaaccjjjnnnnttttxxyyyyywvvrrrnnneeecccccc 24 abcccccccccaaaaaaccaccccaaaaaccciiinnnnttxxyyyyyyywwrrnnnneeecccccc 25 abccccccccccccaaacccccccaacaaaccciiinnnttxxyywwyyywwrrnnnffeccccccc 26 abccccccccccccaaacccccccaccaaaccciiinnnttwwwwwwwwwwwrrrnnfffccccccc 27 abccccccccccccccccccccccccccccccciiinnnttwwwwsswwwwwrrrnnfffccccccc 28 abaaaccaaccccccccccccccccccccccccciinnnttswwwssswwwwrrroofffacccccc 29 abaaccaaaaaacccccccccccccccccaaacciinnntssssssssssrrrrooofffacccccc 30 abaccccaaaaacccccccaaacccccccaaaaciinnnssssssmmssssrrrooofffacccccc 31 abaacaaaaaaacccccccaaaaccccccaaaaciiinmmmssmmmmmoosroooooffaaaacccc 32 abaaaaaaaaaaaccccccaaaaccccccaaacciiimmmmmmmmmmmoooooooofffaaaacccc 33 abcaaaaaaaaaaccccccaaaaccccccccccccihhmmmmmmmhggoooooooffffaaaccccc 34 abcccccaaacaccccccccaaccccccccccccchhhhhhhhhhhggggggggggffaaacccccc 35 abaccccaacccccccccccaaaccccccccccccchhhhhhhhhhgggggggggggcaaacccccc 36 abaaaccccaccccccccccaaaacccaacccccccchhhhhhhaaaaaggggggcccccccccccc 37 abaaaccccaaacaaaccccaaaacaaaacccccccccccccccaaaacccccccccccccccaaac 38 abaacccccaaaaaaaccccaaaaaaaaacccccccccccccccaaacccccccccccccccccaaa 39 abaaaccccaaaaaaccccaaaaaaaaccccccccccccccccccaacccccccccccccccccaaa 40 abccccccaaaaaaaaaaaaaaaaaaacccccccccccccccccaaccccccccccccccccaaaaa 41 abcccccaaaaaaaaaaaaaaaaaaaaacccccccccccccccccccccccccccccccccaaaaaa