MAYBE
30.36/10.18	MAYBE
30.36/10.18	
30.36/10.18	Problem:
30.36/10.18	 a(x1) -> x1
30.36/10.18	 a(b(x1)) -> b(b(a(a(c(a(x1))))))
30.36/10.18	 b(x1) -> x1
30.36/10.18	 c(c(x1)) -> x1
30.36/10.18	
30.36/10.18	Proof:
30.36/10.18	 Open
30.36/10.19	EOF