Public:
Epirus:  2 to Aetolia, 2 Hold                                                                  
Thessaly, 2 to Macesonia, 2 hold                                                               
Macedonia 4 to Thrace                                                                          
Byzantium, 2 to Thrace, 2 hold                                                                 
Moesia 2 to Thrace, 4 hold                                                                     
Thace 4 hold                                                                                   
Getae, 2 to Dacia, 3 hold                                                                      
                                                                                               
That should leave 12 on THrace for a city.