Коды уровней:

2 - AAJIHGDDC

3 - CGGHDGGDG

4 - HDICICCII

5 - IDHEHDGCC

6 - IJIIDIHEC

7 - CFDFEFEFJ

8 - JIIJIIIIC

9 - AAAABAAAA

10 - CCGDGBBBB

11 - HHIAAAJJIG

12 - GGDDJJHFD

13 - JIECBFGFF

14 - HGGEDDCCB

15 - HHHGFGDCC