! pipedum_19e.scl ! 225/224, 126/125, 245/243, Paul Erlich, 2001 19 ! 36/35 15/14 192/175 7/6 6/5 5/4 9/7 4/3 48/35 35/24 3/2 14/9 8/5 5/3 12/7 175/96 28/15 35/18 2/1