layout = array2d(1..17,1..3, [
26, 17, 22, 
19, 41, 46, 
5, 12, 13, 
31, 42, 3, 
49, 30, 36, 
38, 48, 52, 
20, 34, 2, 
9, 28, 24, 
44, 11, 33, 
50, 43, 16, 
45, 4, 47, 
29, 37, 51, 
32, 8, 21, 
35, 39, 14, 
15, 7, 10, 
27, 6, 18, 
23, 40, 25
]);