X off

X offX offX offX offX offX off
X offX offX offX offX offX off
X offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX offX off