.
                       ..
                      ...
                     ..# 
    #             #..?(# 
#####.#############....# 
.......................# 
.....###..b....####.#### 
...    #..B....#  #.#    
.      #.......#  #.#    
       #.......####.#    
      .............>#    
     ###.......####.#### 
       #.......#  #.#..+ 
       #########  #.#<.# 
                  #....+ 
                  ###..# 
                    ####