#The collapsed adjacency matrices were computed by C. E. Praeger and L. H. Soicher. mats:=[ [ [ 1, 0, 0 ], [ 0, 1, 0 ], [ 0, 0, 1 ] ], [ [ 0, 3159, 0 ], [ 1, 918, 2240 ], [ 0, 648, 2511 ] ], [ [ 0, 0, 10920 ], [ 0, 2240, 8680 ], [ 1, 2511, 8408 ] ] ];