612.66/299.38	MAYBE
612.66/299.38	
612.66/299.38	Problem:
612.66/299.38	 strict:
612.66/299.38	  b(a(a(x1))) -> a(b(c(x1)))
612.66/299.38	  c(a(x1)) -> a(c(x1))
612.66/299.38	  c(b(x1)) -> b(a(x1))
612.66/299.38	 weak:
612.66/299.38	  x1 -> b(x1)
612.66/299.38	
612.66/299.38	Proof:
612.66/299.38	 Open
612.66/299.38	EOF