F bx x

F bx xF bx xF bx xF bx xF bx xF bx x
F bx xF bx xF bx xF bx xF bx xF bx x
F bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx xF bx x