1 = 2 : 2

2 = 2

3 = 2 : 2 + 2

4 = 2 + 2

5 = 2 : 2 + 2 + 2

6 = 2 + 2 + 2

7 = 2 : 2 + 2 + 2 + 2

8 = 2 + 2 + 2 + 2

9 = 2 : 2 + 2 + 2 + 2 + 2

10 = 2 + 2 + 2 + 2 + 2