This is interesting: If you only play numbers 14 to 30 for the 3rd and 4th positions, you would see several winning numbers.

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Preliminary Rules for the Texas Cash 5 Game:
FIRST Position: 1 to 15
SECOND Position: 1 to 15
THIRD Position: 14 to 32
FOURTH Position: 14 to 32
FIFTH Position: 29 to 35