707.38/299.40	MAYBE
707.38/299.40	
707.38/299.40	Problem:
707.38/299.40	 strict:
707.38/299.40	  Tl(O(x),y) -> Wr(check(x),y)
707.38/299.40	  Tl(O(x),y) -> Wr(x,check(y))
707.38/299.40	  Tl(N(x),y) -> Wr(check(x),y)
707.38/299.40	  Tl(N(x),y) -> Wr(x,check(y))
707.38/299.40	  Tr(x,O(y)) -> Wl(check(x),y)
707.38/299.40	  Tr(x,O(y)) -> Wl(x,check(y))
707.38/299.40	  Tr(x,N(y)) -> Wl(check(x),y)
707.38/299.40	  Tr(x,N(y)) -> Wl(x,check(y))
707.38/299.40	  Tl(B(),y) -> Wr(check(B()),y)
707.38/299.40	  Tl(B(),y) -> Wr(B(),check(y))
707.38/299.40	  Tr(x,B()) -> Wl(check(x),B())
707.38/299.40	  Tr(x,B()) -> Wl(x,check(B()))
707.38/299.40	 weak:
707.38/299.40	  Tl(O(x),y) -> Wl(check(x),y)
707.38/299.40	  Tl(O(x),y) -> Wl(x,check(y))
707.38/299.40	  Tl(N(x),y) -> Wl(check(x),y)
707.38/299.40	  Tl(N(x),y) -> Wl(x,check(y))
707.38/299.40	  Tr(x,O(y)) -> Wr(check(x),y)
707.38/299.40	  Tr(x,O(y)) -> Wr(x,check(y))
707.38/299.40	  Tr(x,N(y)) -> Wr(check(x),y)
707.38/299.40	  Tr(x,N(y)) -> Wr(x,check(y))
707.38/299.40	  B() -> N(B())
707.38/299.40	  check(O(x)) -> ok(O(x))
707.38/299.40	  Wl(ok(x),y) -> Tl(x,y)
707.38/299.40	  Wl(x,ok(y)) -> Tl(x,y)
707.38/299.40	  Wr(ok(x),y) -> Tr(x,y)
707.38/299.40	  Wr(x,ok(y)) -> Tr(x,y)
707.38/299.40	  check(O(x)) -> O(check(x))
707.38/299.40	  check(N(x)) -> N(check(x))
707.38/299.40	  O(ok(x)) -> ok(O(x))
707.38/299.40	  N(ok(x)) -> ok(N(x))
707.38/299.40	
707.38/299.40	Proof:
707.38/299.40	 Open
707.49/299.41	EOF