|   C(i, j)  |       A  |       B  |       E  |       F  |       G  |       C  |       D  |    
|   A  |       ∞  |       3  |       6  |       8  |       16  |       30  |       42  |    
|   B  |       3  |       ∞  |       9  |       5  |       27  |       45  |       25  |    
|   E  |       6  |       9  |       ∞  |       5  |       10  |       15  |       28  |    
|   F  |       8  |       5  |       5  |       ∞  |       11  |       36  |       18  |    
|   G  |       16  |       27  |       10  |       11  |       ∞  |       8  |       10  |    
|   C  |       30  |       45  |       15  |       36  |       8  |       ∞  |       4  |    
|   D  |       42  |       25  |       28  |       18  |       10  |       4  |       ∞  |