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