XX     X      X      XX     XX     XX     XX     XX    XXX    XX                   XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XXX    XX
X    XXX    XXX    XXX    XXX
____XX_____X______X______XX_____XX_____XX_____XX_____XX____XXX____XX___________________XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XXX____XX____XXX____XXX____XXX____XXX