▓▓▓▓▓▓▓▓▓▓▓    
▓▓....3.1.6▓▓   
▓.......&§2.▓▓  
?2..#####§3..▓▓ 
6   #...#§§...▓▓
  21#...#....∩.▓
  ..#...#.....▓▓
....#####....▓▓ 
▓.. ........▓▓  
▓▓ ........▓▓   
  ▓▓▓▓▓▓▓▓▓▓