196.33/50.27	MAYBE
196.33/50.27	
196.33/50.27	Problem:
196.33/50.27	 a(a(a(b(x1)))) -> b(a(b(a(x1))))
196.33/50.27	 b(b(a(x1))) -> a(a(b(a(x1))))
196.33/50.27	
196.33/50.27	Proof:
196.33/50.27	 Open
196.33/50.28	EOF