1 = 2 + 2 – 2 - 2/2;
2 = 2 + 2 + 2 - 2 – 2;
3 = 2 + 2 – 2 + 2/2;
4 = 2 * 2 * 2 – 2 – 2;
5 = 2 + 2 + 2 – 2/2;
6 = 2 + 2 + 2 + 2 - 2;
7 = 22/2 – 2 - 2;
8 = 2*2*2 + 2 - 2;
9 = 2*2*2 + 2/2;
10 = 2 + 2 + 2 + 2 + 2;
11 = 22/2 + 2 - 2;
12 = 2*2*2 + 2 + 2;
13 = (22 + 2 + 2)/2;
14 = 2*2*2*2 - 2;
15 = 22/2 + 2 + 2;