1 1011111111
2 1101111111
3 1110111111
4 1111011111
5 1111101111
6 1111110111
7 1111111011
8 1111111101
9 0111111111
10 1111111110
11 0000000001
12 0000000010
13 0000000100
14 0000001000
15 0000010000
16 0000100000
17 0001000000
18 0010000000
19 0100000000
20 1000000000
Attention! Feel free to leave feedback.