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Listed below are the answers and cheats to Shell levels 15537 to 15552 in Master Levels.
- Level 15537 – Shell 1
- Level 15538 – Shell 2
- Level 15539 – Shell 3
- Level 15540 – Shell 4
- Level 15541 – Shell 5
- Level 15542 – Shell 6
- Level 15543 – Shell 7
- Level 15544 – Shell 8
- Level 15545 – Shell 9
- Level 15546 – Shell 10
- Level 15547 – Shell 11
- Level 15548 – Shell 12
- Level 15549 – Shell 13
- Level 15550 – Shell 14
- Level 15551 – Shell 15
- Level 15552 – Shell 16