X     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX            XX            XX            XX    XXXX           XX     XX                 X XX     XXX    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_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX____________XX____________XX____________XX____XXXX___________XX_____XX_________________X_XX_____XXX____XX____________XX_____XX___________________XX_____XXX____XX_____XX_XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____