MAYBE 47.06/17.27 MAYBE 47.06/17.27 47.06/17.27 Problem: 47.06/17.27 a(x1) -> x1 47.06/17.27 a(x1) -> b(b(x1)) 47.06/17.27 b(b(b(c(x1)))) -> c(c(a(a(x1)))) 47.06/17.27 47.06/17.27 Proof: 47.06/17.27 Open 47.06/17.27 EOF