XX     X      X      XX     XX     XX            X      XX                          XX     XX            XXX    XXX     X                   XX     XX            XX     XX     XX     XX     XX     XX     XX
_____XX_____X______X______XX_____XX_____XX____________X______XX__________________________XX_____XX____________XXX____XXX_____X___________________XX_____XX____________XX_____XX_____XX_____XX_____XX_____XX_____XX