197.12/50.46	MAYBE
197.12/50.46	
197.12/50.46	Problem:
197.12/50.46	 a(a(a(b(x1)))) -> a(b(b(b(b(a(a(a(x1))))))))
197.12/50.46	
197.12/50.46	Proof:
197.12/50.46	 Open
197.12/50.47	EOF