| Banka | Bhagalpur | Madhepura |
| Begusarai | Munger | Supaul |
| Khagaria | Aurangabad | Bhojpur |
| Rohtas | Madhubani | Samastipur |
| Darbhanga | Purbi Champaran | Saran |
| Purnia | Saharsa | Sitamarhi |
| Pashchim Champaran | Gaya | Patna |
| Gopalganj | Muzaffarpur | Katihar |
| Jamui | Arwal | Jehanabad |
| Siwan | Kishanganj | Lakhisarai |
| Kaimur | Nalanda | Sheikhpura |
| Vaishali | Sheohar | Nawada |
| Araria | Buxar |
