A	B	C	D	E
A	0				
B	9	0			
C	3	7	0		
D	6	5	9	0	
E	11	10	2	8	0
					
					
	A	B	D	C+E	
A	0				
B		0			
D			0		
C+E			9	0	
					
					
					
	0				
		0			
			0		
					
					
					
	0				
		0