if __name__ =="__main__":
    width = int(input())
    actual_fig_width = 6*width

    #left arrow
    for i in range(width):
        print(('H'*(2*i+1)).center(2*width))

    #top pillars
    for i in range(width+1):
        print(('H'*width).center(2*width) + (('H'*width).rjust(actual_fig_width - 3*width + width//2)))

    #middle horizontal pillar
    for i in range(width//2 +1):
        print(('H'*(width*5)).center(actual_fig_width))

    #bottom pillars
    for i in range(width+1):
        print(('H'*width).center(2*width) + (('H'*width).rjust(actual_fig_width - 3*width + width//2)))

    #bottom arrow
    for i in range(width-1,-1,-1):
        print((' '*2*width).center(actual_fig_width - 2*width) + ('H'*(2*i+1)).center(2*width))