--------------|--- &quot;M&quot;       |
|          .   |   .= .                  .   |   .^ #       |
|              |   =                         |   /          |
|         .    |  = .                   .    |  / .         |
|              | =     .                     | /     #      |
|        .     |=    .                 .     |/    .        |
|              S &lt;------------@------------ &quot;S&quot;             |
|       .    .. ..    . .             .  * .. .#    . #     |
|          . .   . .    