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