King's Valley 2 Easter Egg - Cheatcodes for the Best Puzzle Game on MSX from Konami (NOT AN EGG)

King's Valley II is an SCC megaROM cartridge from Konami. It's a fantastic puzzle game.
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Passwords:
FESTIVAL : invincibility
TRYAGAIN : continue the game after GAME OVER message (press F5)
HELPMODE : stage 47
GAMEMODE : stage 49
DEMOMODE : stage 51
KINGMODE : stage 53
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Password Generator:
A1 01 A2 02 A3 03 A4 04 A5 05 A6 06 A7 07 A8 08
A9 09 AK 10 AL 11 AM 12 AN 13 AO 14 AP 15 BA 16
BB 17 BC 18 BD 19 BE 20 BF 21 BG 22 BH 23 BI 24
BJ 25 BK 26 BL 27 BM 28 BN 29 BO 30 BP 31 CA 32
CB 33 CC 34 CD 35 CE 36 CF 37 CG 38 CH 39 CI 40
CJ 41 CK 42 CL 43 CM 44 CN 45 CO 46 CP 47 DA 48
DB 49 DC 50 DD 51 DE 52 DF 53 DG 54 DH 55 DI 56
DJ 57 DK 58 DL 59 DM 60 PP 98 for lives

XXABDAFO Where XX is level.
ABXXDAFO Where XX is lives.

The Puzzle Stage
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IJKAGFIO : stage 52
You can enter a puzzle stage from the following stages: 20, 35, 43, 52, 55. The one in stage 52 is at this location : you had to go down the screen on the right (near the soul stone), then you had to jump, a pyramid appears, jump again, a door apppears, go down with your joystick or keyboard, you have entered the puzzle stage!! If you complete the puzzle stage, you'll receive about 35 lives...

The Music Stage
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A music stage is a keyboard, with which you can play some music of the game.
You can enter a music stage from the following stages: 7, 32, 40, 50, 53. Same thing, you had to find the pyramid by jumping around....
the password for the stage 32 is : CAABDAFO