All the passwords:

Level 1-1 --- PPHP
Level 1-2 --- PHPK
Level 1-3 --- PQPD
Level 1-4 --- PVPT
Level 1-5 --- PRPJ

Level 2-1 --- PBPM
Level 2-2 --- PLPY
Level 2-3 --- PCPZ
Level 2-4 --- PGPG
Level 2-5 --- PZPC

Level 3-1 --- PYPL
Level 3-2 --- PMPB
Level 3-3 --- PJPR
Level 3-4 --- PTPV
Level 3-5 --- PDPQ

Level 4-1 --- PKPH
Level 4-2 --- HPPP
Level 4-3 --- HHKK
Level 4-4 --- HQKD
Level 4-5 --- HVKT

Level 5-1 --- HRKJ
Level 5-2 --- HBKM
Level 5-3 --- HLKY
Level 5-4 --- HCKZ
Level 5-5 --- HGHG

Level 6-1 --- HZKC
Level 6-2 --- HYKL
Level 6-3 --- HMKB
Level 6-4 --- HJKR
Level 6-5 --- HTKV

Level 7-1 --- HDKQ
Level 7-2 --- HKKH
Level 7-3 --- QPKP
Level 7-4 --- QHDK
Level 7-5 --- QQDD

Level 8-1 --- QVDT
Level 8-2 --- QRDJ
Level 8-3 --- QBDM
Level 8-4 --- QLDY
Level 8-5 --- QCDZ

Level 9-1 --- QGDG
Level 9-2 --- QZDC
Level 9-3 --- QYDL
Level 9-4 --- QMBD
Level 9-5 --- QJDR

Level 10-1 --- QTDV
Level 10-2 --- QDDQ
Level 10-3 --- QKDH
Level 10-4 --- VPDP
Level 10-5 --- VHTK

To access the 'pro' levels, use the codes: PROA, PROB, PROC, and PROD.