2 x 8 =
2 x 4 =
2 x 7 =
2 x 0 =
2 x 3 =
2 x 2 =
2 x 10 =
2 x 5 =
2 x 1 =
2 x 9 =
2 x 6 =
0
8
2
12
18
6
16
14
20
4
10
