mat( ( 0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0), ( 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,0), ( 0,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0), ( 0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0 ) )