196.14/50.12	MAYBE
196.14/50.12	
196.14/50.12	Problem:
196.14/50.12	 a(x1) -> b(x1)
196.14/50.12	 a(b(c(x1))) -> c(c(a(a(x1))))
196.14/50.12	 c(c(x1)) -> b(x1)
196.14/50.12	
196.14/50.12	Proof:
196.14/50.12	 Open
196.14/50.13	EOF