2x9
6
2x4
2+2+2+2+2+2+2+2
2x2
2+2+2
2+2+2+2
2x6
10
2+2+2+2+2+2+2+2+2
2+2+2+2+2+2
4
2x7
8
2+2
12
2+2+2+2+2+2+2
2+2+2+2+2
14
16
18
2x8
2x5
2x3
