mat( ( 1,0,1,0,0,1,0,0,1,0,0,0,0,0,0), ( 1,0,0,0,3,0,0,0,0,0,1,0,0,0,0), ( 0,0,1,0,0,0,0,0,0,1,0,0,0,0,0), ( 0,1,0,0,0,0,0,0,0,1,0,0,0,0,0), ( 0,0,0,1,0,0,0,1,0,0,1,0,0,0,0), ( 0,0,0,0,0,1,0,0,0,0,0,1,0,0,0), ( 0,0,0,0,0,0,0,0,0,0,0,1,0,0,0), ( 0,0,0,0,0,0,0,0,0,0,0,0,1,0,0), ( 0,0,0,0,0,0,1,0,0,0,0,0,0,0,0 ) )