! pipedum_22e.scl ! 1728/1715, 245/243, 50/49, Paul Erlich, 2001 22 ! 36/35 21/20 10/9 8/7 7/6 6/5 5/4 9/7 4/3 49/36 7/5 72/49 3/2 14/9 8/5 5/3 12/7 7/4 9/5 40/21 35/18 2/1