MAYBE
91.35/55.32	MAYBE
91.35/55.32	
91.35/55.32	Problem:
91.35/55.32	 a(x1) -> x1
91.35/55.32	 a(b(x1)) -> x1
91.35/55.32	 a(c(c(x1))) -> c(b(c(a(c(a(x1))))))
91.35/55.32	
91.35/55.32	Proof:
91.35/55.32	 Open
91.35/55.33	EOF