X     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX            XX            XX            XX    XXXX                                     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_____________________________________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_____