196.32/50.12	MAYBE
196.32/50.12	
196.32/50.12	Problem:
196.32/50.12	 a(b(x1)) -> x1
196.32/50.12	 a(c(x1)) -> c(c(b(b(x1))))
196.32/50.12	 b(c(x1)) -> a(a(x1))
196.32/50.12	
196.32/50.12	Proof:
196.32/50.12	 Open
196.32/50.13	EOF