lava stone: T-819 made a mano komon
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field sizes
Square
2 x 2
4 x 4
6 x 6
8 x 8
12 x 12
16 x 16
20 x 20
24 x 24
31 x 31
Rectangle
2 x 8 6 x 16
3 x 6 6 x 20
3 x 10 6 x 24
3 x 16 6 x 31
4 x 8 6 x 39
4 x 12 6 x 79
4 x 20 8 x 16
4 x 24 8 x 24
4 x 31 12 x 24
6 x 12 12 x 35