! pipedum_19n.scl ! 126/125, 2401/2400, 16/15, Gene Ward Smith, 2002 19 ! 49/48 21/20 15/14 7/6 6/5 49/40 5/4 125/98 7/5 10/7 35/24 3/2 49/30 5/3 12/7 7/4 25/14 49/25 2/1