1 + 10 = 112 + 9 = 113 + 8 = 114 + 7 = 115 + 6 = 116 + 5 = 117 + 4 = 118 + 3 = 119 + 2 = 1110 + 1 = 11
1 + 10 = 11
2 + 9 = 11
3 + 8 = 11
4 + 7 = 11
5 + 6 = 11
6 + 5 = 11
7 + 4 = 11
8 + 3 = 11
9 + 2 = 11
10 + 1 = 11