Divide the bonus ball numbers (1-26) into 13 parts:
Part 1 range: 1 - 2
Part 2 range: 3 - 4
Part 3 range: 5 - 6
Part 4 range: 7 - 8
Part 5 range: 9 - 10
Part 6 range: 11 - 12
Part 7 range: 13 - 14
Part 8 range: 15 - 16
Part 9 range: 17 - 18
Part 10 range: 19 - 20
Part 11 range: 21 - 22
Part 12 range: 23 - 24
Part 13 range: 25 - 26