▓▓▓▓▓▓▓▓▓▓▓▓▓
     ▓▓...........▓
    ▓▓..........v..
   ▓▓..............
  ▓▓...........v..M
 ▓▓................
▓▓..............vv.
▓.∩...........v.v..
▓▓...........§.v..§
 ▓▓.3.........v..vs
  ▓▓..........v..vv
   ▓▓............4.
    ▓▓.........v.s.
     ▓▓..........4▓
      ▓▓▓▓▓▓▓▓▓▓▓▓▓