Enter each of the following codes at the Password screen:

Level 2 - BJDGGM
Level 3 - BJFGHM
Level 4 - BJGGDM
Level 5 - BJHGFM
Level 6 - BJKGCM
Level 7 - BJLGSM
Level 8 - BJMGTM
Level 9 - BJNGQM
Level 10 - BJPGRM
Level 11 - BGQGNP
Ending - BGRBPK