! pipedum_27i.scl ! 2401/2400, 1728/1715, 245/243, Paul Erlich, 2001 27 ! 36/35 21/20 2592/2401 10/9 8/7 7/6 6/5 49/40 432/343 9/7 4/3 49/36 7/5 10/7 72/49 3/2 14/9 343/216 80/49 5/3 12/7 7/4 9/5 2401/1296 40/21 35/18 2/1