198.27/50.71	MAYBE
198.27/50.71	
198.27/50.71	Problem:
198.27/50.71	 a(a(a(a(x1)))) -> b(b(c(c(x1))))
198.27/50.71	 b(b(b(b(x1)))) -> a(a(c(c(x1))))
198.27/50.71	 c(c(c(c(x1)))) -> b(a(a(a(x1))))
198.27/50.71	
198.27/50.71	Proof:
198.27/50.71	 Open
198.27/50.72	EOF