X     XX     XXXXXXXXX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX     XX                                                                                                                              X    XX     XX
XX     X
X_____XX_____XXXXXXXXX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX_____XX______________________________________________________________________________________________________________________________X____XX_____XX_XX_____X