X     XX     XX     XX     XX            XX      X     XX     XX                          XX     XX     XX            XX     X X    X      X      X      X      XX     X      X      X      X      X      X      X      X      X
X_____XX_____XX_____XX_____XX____________XX______X_____XX_____XX__________________________XX_____XX_____XX____________XX_____X_X____X______X______X______X______XX_____X______X______X______X______X______X______X______X______X