F 4x

F 4xF 4xF 4xF 4x
F 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4x
F 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4x
F 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4x
F 4xF 4xF 4xF 4xF 4xF 4xF 4xF 4x