+
					       /
					      /
					     /
					    +
					    |
					    |
					    |
					    +
					     \
					      \
					       \
						+---+
					       /|\ /|
					      / | X |
					     /  |/ \|
	    +---+---+---+---+		    +---+---+
	   /|\ /|\ /|\ /|\ /|\		   /	     \
	  / | X | X | X | X | \		  /	      \
	 /  |/ \|/ \|/ \|/ \|  \	 /	       \
	+---+---+---+---0---+---+---+---+		+
	|\ /|\ /|\ /|\ /|\ /|\ /|  /		       /
	| X | X	| X | X	| X | X	| /		      /
	|/ \|/ \|/ \|/ \|/ \|/ \|/		     /
	0---+---+---+---+---+---+		    +
	 \  |\ /|\ /|\ /|\ /|\ /|	
	  \ | X | X | X	| X | X	|
	   \|/ \|/ \|/ \|/ \|/ \|
	    +---+---+---+---+---0
	   /|\ /|\ /|\ /|  /|\ /|\
	  / | X | X | X	| / | X	| \
	 /  |/ \|/ \|/ \|/  |/ \|  \
	+---+---0---+---+---+---+---+
		 \  |\ /|\ /|  /
		  \ | X | X | /
		   \|/ \|/ \|/
		    +---+---+
			O
			U
			T