MAYBE
219.30/55.62	MAYBE
219.30/55.63	
219.30/55.63	Problem:
219.30/55.63	 R(b(x1)) -> b(R(x1))
219.30/55.63	 R(c(x1)) -> L(c(x1))
219.30/55.63	 b(L(x1)) -> L(b(x1))
219.30/55.63	 a(L(x1)) -> a(b(R(x1)))
219.30/55.63	
219.30/55.63	Proof:
219.30/55.63	 Open
219.30/55.63	EOF