741.33/299.38	MAYBE
741.33/299.39	
741.33/299.39	Problem:
741.33/299.39	 strict:
741.33/299.39	  c(c(a(x1))) -> a(a(c(x1)))
741.33/299.39	  b(b(a(x1))) -> b(b(b(x1)))
741.33/299.39	 weak:
741.33/299.39	  b(c(b(x1))) -> c(b(c(x1)))
741.33/299.39	  b(a(a(x1))) -> c(a(c(x1)))
741.33/299.39	  c(a(a(x1))) -> a(a(c(x1)))
741.33/299.39	  c(c(b(x1))) -> c(b(a(x1)))
741.33/299.39	
741.33/299.39	Proof:
741.33/299.39	 Open
741.33/299.39	EOF