Divide 1 to 37 into 12 scales

Divide the numbers from 1-37 into 12 scales, with each scale representing the following numerical intervals:

Size 1st: 1 - 4

Size 2nd: 5 - 7

Size 3rd: 8 - 10

Size 4th: 11 - 13

Size 5th: 14 - 16

Size 6th: 17 - 19

Size 7th: 20 - 22

Size 8th: 23 - 25

Size 9th: 26 - 28

Size 10th: 29 - 31

Size 11th: 32 - 34

Size 12th: 35 - 37