197.77/50.58	MAYBE
197.77/50.58	
197.77/50.58	Problem:
197.77/50.58	 a(b(a(a(x1)))) -> b(b(b(b(x1))))
197.77/50.58	 b(b(a(b(x1)))) -> a(b(a(a(x1))))
197.77/50.58	 b(a(b(b(x1)))) -> a(a(b(a(x1))))
197.77/50.58	
197.77/50.58	Proof:
197.77/50.58	 Open
197.77/50.58	EOF