#The collapsed adjacency matrices were computed by C. E. Praeger and L. H. Soicher. mats:=[ [ [ 1, 0, 0, 0 ], [ 0, 1, 0, 0 ], [ 0, 0, 1, 0 ], [ 0, 0, 0, 1 ] ], [ [ 0, 165, 0, 0 ], [ 1, 0, 92, 72 ], [ 0, 46, 11, 108 ], [ 0, 15, 45, 105 ] ], [ [ 0, 0, 330, 0 ], [ 0, 92, 22, 216 ], [ 1, 11, 138, 180 ], [ 0, 45, 75, 210 ] ], [ [ 0, 0, 0, 792 ], [ 0, 72, 216, 504 ], [ 0, 108, 180, 504 ], [ 1, 105, 210, 476 ] ] ];