# 9 different group configurations
[[ 0,  1], [ 2,  3], [ 4,  5], [ 6,  7], [ 8,  9]]
[[ 3,  4], [ 5,  8], [ 7,  1], [ 6,  0], [ 9,  2]]
[[ 2,  7], [ 1,  5], [ 9,  4], [ 8,  6], [ 3,  0]]
[[ 8,  1], [ 3,  5], [ 0,  2], [ 6,  4], [ 7,  9]]
[[ 4,  2], [ 8,  3], [ 1,  9], [ 0,  7], [ 6,  5]]
[[ 1,  3], [ 9,  5], [ 6,  2], [ 7,  8], [ 0,  4]]
[[ 7,  5], [ 3,  6], [ 0,  9], [ 1,  4], [ 2,  8]]
[[ 4,  8], [ 6,  9], [ 5,  0], [ 7,  3], [ 1,  2]]
[[ 7,  4], [ 0,  8], [ 3,  9], [ 1,  6], [ 2,  5]]
