704.49/299.40	MAYBE
704.49/299.40	
704.49/299.40	Problem:
704.49/299.40	 strict:
704.49/299.40	  Tl(O(x),y) -> Tr(check(x),y)
704.49/299.40	  Tl(O(x),y) -> Tr(x,check(y))
704.49/299.40	  Tl(N(x),y) -> Tr(check(x),y)
704.49/299.40	  Tl(N(x),y) -> Tr(x,check(y))
704.49/299.40	  Tr(x,O(y)) -> Tl(check(x),y)
704.49/299.40	  Tr(x,O(y)) -> Tl(x,check(y))
704.49/299.40	  Tr(x,N(y)) -> Tl(check(x),y)
704.49/299.40	  Tr(x,N(y)) -> Tl(x,check(y))
704.49/299.40	  Tl(B(),y) -> Tr(check(B()),y)
704.49/299.40	  Tl(B(),y) -> Tr(B(),check(y))
704.49/299.40	  Tr(x,B()) -> Tl(check(x),B())
704.49/299.40	  Tr(x,B()) -> Tl(x,check(B()))
704.49/299.40	 weak:
704.49/299.40	  Tl(O(x),y) -> Tl(check(x),y)
704.49/299.40	  Tl(O(x),y) -> Tl(x,check(y))
704.49/299.40	  Tl(N(x),y) -> Tl(check(x),y)
704.49/299.40	  Tl(N(x),y) -> Tl(x,check(y))
704.49/299.40	  Tr(x,O(y)) -> Tr(check(x),y)
704.49/299.40	  Tr(x,O(y)) -> Tr(x,check(y))
704.49/299.40	  Tr(x,N(y)) -> Tr(check(x),y)
704.49/299.40	  Tr(x,N(y)) -> Tr(x,check(y))
704.49/299.40	  B() -> N(B())
704.49/299.40	  check(O(x)) -> O(x)
704.49/299.40	  check(O(x)) -> O(check(x))
704.49/299.40	  check(N(x)) -> N(check(x))
704.49/299.40	
704.49/299.40	Proof:
704.49/299.40	 Open
704.49/299.41	EOF