0
Level codes:
LEVEL 2 AAJIHGDDC
LEVEL 3 CGGHDGGDG
LEVEL 4 HDICICCII
LEVEL 5 IDHEHDGCC
LEVEL 6 IJIIDIHEC
LEVEL 7 CFDFEFEFJ
LEVEL 8 JIIJIIIIC
LEVEL 9 AAAABAAAA
LEVEL 10 CCGDGBBBB
LEVEL 11 HHIAAJJIG
LEVEL 12 GGDDJJHFD
LEVEL 13 JIECBFGFF
LEVEL 14 HGGEDDCCB
LEVEL 15 HHHGFGDCC
LEVEL 16 IHDCHGHFF
LEVEL 17 IHDCHGHFF
LEVEL 18 IHDCHGHFF
LEVEL 19 IHDCHGHFF
LEVEL 20 IHDCHGHFF
LEVEL 2 AAJIHGDDC
LEVEL 3 CGGHDGGDG
LEVEL 4 HDICICCII
LEVEL 5 IDHEHDGCC
LEVEL 6 IJIIDIHEC
LEVEL 7 CFDFEFEFJ
LEVEL 8 JIIJIIIIC
LEVEL 9 AAAABAAAA
LEVEL 10 CCGDGBBBB
LEVEL 11 HHIAAJJIG
LEVEL 12 GGDDJJHFD
LEVEL 13 JIECBFGFF
LEVEL 14 HGGEDDCCB
LEVEL 15 HHHGFGDCC
LEVEL 16 IHDCHGHFF
LEVEL 17 IHDCHGHFF
LEVEL 18 IHDCHGHFF
LEVEL 19 IHDCHGHFF
LEVEL 20 IHDCHGHFF