Help Lester find his way through this alien landscape with these passwords.

Level 1: LDKD
Level 2: HTDC
Level 3: CLLD
Level 4: LBKG
Level 5: XDDJ
Level 6: FXLC
Level 7: KRFK
Level 8: BRTD
Level 9: TFBB
Level 10: TXHF
Level 11: CKJL
Level 12: LFCK