The game uses specific patterns for multiple wager amounts and following the patterns will result in you winning.
For the Xbox 360 version:
* Pattern 1: A, B, A, B, A, B, A, B, A, B (repeats)
* Pattern 2: A, B, A, Y, A, B, A, Y, A, B (repeats from beginning)
* Pattern 3: A, B, A, Y, A, X, A, B, A, Y (repeats from beginning)