xxxxxxNNNGYGYxxxxxxxGYGYNNNxxxxxxxNNNGNNNxxxxxxx
       NNG
          YGY
                    GYG
                                   NNG
xxxxxxNNNGYGYxxxxxxxGYGYNNNxxxxxxxNNNGNNNxxxxxxx
       NNGYGY
                    GYGY
                                   NNG

##</code><code>##

xxxxxxNNNGYGYxxxxxxxGYGYNNNxxxxxxxNNNGNNNxxxxxxx
       NNGYGY
                    GYGYNN
                                   NNGNN