MAYBE 150.54/55.61 MAYBE 150.54/55.61 150.54/55.61 Problem: 150.54/55.61 a(x1) -> b(x1) 150.54/55.61 a(x1) -> b(b(c(x1))) 150.54/55.61 c(a(b(x1))) -> a(c(a(x1))) 150.54/55.61 150.54/55.61 Proof: 150.54/55.61 Open 150.54/55.61 EOF