X      X            XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     X      X      X      XX     XX    XXXX    XX     XX     XX     XX      X   X XX     XXX    XX     XX     XX     XX     XX     XX     XX     XXX    XX     XX
XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     X
X______X____________XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____X______X______X______XX_____XX____XXXX____XX_____XX_____XX_____XX______X___X_XX_____XXX____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XXX____XX_____XX_XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____