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