The following passwords are for the NORMAL level of difficulty.

Level Password
1 S,X,X,X,S,S,T,X,S
2 T,S,X,X,S,S,T,X,X
3 O,S,X,X,X,S,T,X,X
4 T,X,S,X,X,X,O,X,S
5 O,X,S,X,X,S,T,X,O
6 T,S,S,X,X,X,S,X,T
7 T,X,X,S,S,T,T,X,X
8 S,X,X,S,S,T,X,T,S