MAYBE
35.61/10.30	MAYBE
35.61/10.30	
35.61/10.30	Problem:
35.61/10.30	 a(a(x1)) -> a(b(c(c(x1))))
35.61/10.30	 c(a(x1)) -> x1
35.61/10.30	 c(b(x1)) -> a(a(x1))
35.61/10.30	
35.61/10.30	Proof:
35.61/10.30	 Open
35.61/10.30	EOF