math is my favorite
1x5
5
2x5
10
1x8
8
2x9
18
2x10
20
4x6
24
3x7
21
5x6
30
7x5
35
4x8
32
7x8
56
12x3
36
6x9
54
4x7
28
6x8
48
12x3
8x8
36
64
6x7
8x4
42
32
4x9
8x9
36
72
5x12
7x6
60
42
12x8
7x7
96
49
8x8
7x7
9x8
64
49
72
12x12
10x9
8x6
144
90
48
11x11
8x3
9x5
121
24
45
4x12
5x10
9x9
48
50
81
8x6
11x7
4x9
48
77
36