dl n = 13 nr = 13 nc = 13
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data:
     EA1  RL   HJ   VC   BG   BC   RP   MC   SM   ID   MU   CE   MJ   
EA1    0    1    1    0    0    0    0    0    0    0    0    0    0  
VC     0    0    0    0    1    0    0    0    0    0    0    0    0  
BC     0    0    0    0    1    0    1    0    0    0    0    0    0  
MC     0    0    0    0    0    0    0    0    1    0    0    0    0  
ID     0    0    0    0    0    0    0    0    0    0    1    0    0  
CE     0    0    0    0    0    0    0    0    0    0    0    0    1    
BG     0    0    0    1    0    1    0    0    0    0    0    0    1    
MJ     0    0    0    0    1    0    0    0    0    0    0    1    0  
HJ     1    0    0    0    0    0    0    0    0    0    0    0    0  
RL     1    0    0    0    0    0    0    0    0    0    0    0    0  
SM     0    0    0    0    0    0    0    1    0    0    0    0    0  
RP     0    0    0    0    0    1    0    0    0    0    0    0    0  
MU     0    0    0    0    0    0    0    0    0    1    0    0    0