X   X      X      X                           X XX                                             X XX   X XX   X XX   X XX   X XX   X XX   X XX   X XX   X XX   X XX   X XX   X XX   X
X XX                                                                         X XX   X XX   X XX   X XX
_____X___X______X______X___________________________X_XX_____________________________________________X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X_XX___X___________X_XX_________________________________________________________________________X_XX___X_XX___X_XX___X_XX