195.62/49.97	MAYBE
195.62/49.97	
195.62/49.97	Problem:
195.62/49.97	 a(a(x1)) -> x1
195.62/49.97	 b(b(x1)) -> c(c(c(c(x1))))
195.62/49.97	 c(c(x1)) -> a(c(b(x1)))
195.62/49.97	
195.62/49.97	Proof:
195.62/49.97	 Open
195.62/49.97	EOF