196.31/50.16	MAYBE
196.31/50.16	
196.31/50.16	Problem:
196.31/50.16	 a(x1) -> b(b(x1))
196.31/50.16	 c(b(x1)) -> d(x1)
196.31/50.16	 e(b(x1)) -> c(c(x1))
196.31/50.16	 d(b(x1)) -> b(f(x1))
196.31/50.16	 f(x1) -> a(e(x1))
196.31/50.16	 c(x1) -> x1
196.31/50.16	 a(a(x1)) -> f(x1)
196.31/50.16	
196.31/50.16	Proof:
196.31/50.16	 Open
196.31/50.17	EOF