! pipedum_15h.scl ! 121/120, 1331/1323, 4375/4356, 15625/15552 15 ! 21/20 10/9 8/7 6/5 14/11 4/3 7/5 16/11 32/21 8/5 5/3 7/4 20/11 21/11 2/1