197.05/50.43	MAYBE
197.05/50.43	
197.05/50.43	Problem:
197.05/50.43	 a(a(a(x1))) -> c(c(b(x1)))
197.05/50.43	 b(b(b(x1))) -> c(c(c(x1)))
197.05/50.43	 c(c(c(x1))) -> a(b(b(x1)))
197.05/50.43	
197.05/50.43	Proof:
197.05/50.43	 Open
197.05/50.43	EOF