Divide the 4th digit of the lottery numbers (4-30) into 3 parts:
No.1 range: 4 - 12
No.2 range: 13 - 21
No.3 range: 22 - 30
Divide the 4th digit of the lottery numbers (4-30) into 3 parts:
No.1 range: 4 - 12
No.2 range: 13 - 21
No.3 range: 22 - 30