! pipedum_55.scl ! 81/80, 686/675, 6144/6125, Gene Ward Smith, 2002 55 ! 49/48 36/35 25/24 21/20 16/15 15/14 35/32 28/25 9/8 245/216 8/7 7/6 75/64 6/5 175/144 49/40 56/45 5/4 245/192 9/7 125/96 21/16 4/3 49/36 48/35 7/5 45/32 10/7 36/25 35/24 112/75 3/2 49/32 54/35 14/9 25/16 8/5 49/30 105/64 5/3 42/25 245/144 12/7 7/4 225/128 9/5 49/27 175/96 28/15 15/8 48/25 27/14 35/18 448/225 2/1