! pipedum_27c.scl ! 2401/2400, 126/125, 686/675, Paul Erlich, 2001 27 ! 50/49 21/20 15/14 10/9 8/7 7/6 6/5 60/49 5/4 9/7 4/3 49/36 7/5 10/7 72/49 3/2 14/9 8/5 49/30 5/3 12/7 7/4 9/5 28/15 40/21 49/25 2/1