# 5 different group configurations
[[ 0,  1,  2,  3], [ 4,  5,  6,  7], [ 8,  9, 10, 11], [12, 13, 14, 15], [16, 17, 18, 19]]
[[ 5,  1, 13,  9], [ 4, 16, 10, 12], [ 7, 18,  0, 15], [ 8,  2, 19, 14], [ 3, 17, 11,  6]]
[[15,  1, 16,  8], [11, 19, 13,  7], [18,  4,  9,  3], [ 5, 12,  2, 17], [14,  6,  0, 10]]
[[19, 15, 10,  5], [ 3,  8, 12,  7], [16,  9,  6,  2], [ 0, 13, 17,  4], [11,  1, 14, 18]]
[[ 6, 13,  8, 18], [19, 12,  9,  0], [ 1, 17,  7, 10], [ 5, 14,  3, 16], [ 4, 11,  2, 15]]
