1 :

2

3 :

5

2 :

3


4

8 *

6

10 *

8

12 *

6

12 **

9

15 **

12

18 **^{/}°

10

20°

12

20°
  
 The numerical distance between dot numbers are the same in dot number pairs marked with * and ** (the numerical distances are 4 and 6, respectively). Ratios are in columns. The overall sum is almost equal for dot number pairs marked with ° (30, 32 and 30).