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 - 11

Part 2: 12 - 22

Part 3: 23 - 33

Part 4: 34 - 44

Part 5: 45 - 55

Part 6: 56 - 65

Part 7: 66 - 75