0   0  AFC Central                                                                                 AFC                  
   1   0  AFC East                                                                                    AFC                  
   2   0  AFC West                                                                                    AFC                  
   3  -1  Common Division                                                                                                  
   4  -1  Eastern Conference                                                                                               
   5   1  NFC Central                                                                                 NFC                  
   6   1  NFC East                                                                                    NFC                  
   7   1  NFC West                                                                                    NFC                  
   8  -1  NFL Capitol Division                                                                                             
   9  -1  NFL Central Division                                                                                             
  10  -1  NFL Century Division                                                                                             
  11  -1  NFL Coastal Division                                                                                             
  12  -1  Western Conference