! pipedum_22d.scl ! 1728/1715, 875/864, 64/63, Paul Erlich, 2001 22 ! 36/35 21/20 10/9 8/7 7/6 6/5 5/4 245/192 4/3 48/35 7/5 35/24 3/2 384/245 8/5 5/3 12/7 7/4 9/5 40/21 35/18 2/1