The difference between the 1st and 2nd digits is divided into 7 portions

The difference between the 1st and 2nd digit of the lottery numbers is divided into 7 parts.

Part 1: 1 - 5

Part 2: 6 - 10

Part 3: 11 - 15

Part 4: 16 - 19

Part 5: 20 - 23

Part 6: 24 - 27

Part 7: 28 - 31