191.13/50.25	MAYBE
191.13/50.25	
191.13/50.25	Problem:
191.13/50.25	 a(x1) -> b(x1)
191.13/50.25	 b(b(b(c(x1)))) -> c(c(a(a(a(a(x1))))))
191.13/50.25	
191.13/50.25	Proof:
191.13/50.25	 Open
191.13/50.25	EOF