199.18/50.89	MAYBE
199.18/50.89	
199.18/50.89	Problem:
199.18/50.89	 b(a(c(a(a(a(a(a(a(a(x1)))))))))) -> a(a(a(a(a(a(a(b(a(c(b(a(c(a(x1))))))))))))))
199.18/50.89	
199.18/50.89	Proof:
199.18/50.89	 Open
199.18/50.90	EOF