19
15
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
111111111111111
111111111111111
111111111111111
111111111111111
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
111100000001111
