Most Probably it is going to be BIA if you're travelling between DURG and BSP. If you're travelling between BSP and PRYJ, there's a chance that the loco maybe other than BIA and if you're travelling between PRYJ and CPR, you'll get to see CNB P7. It mostly depends on PRYJ TLC for BSP PRYJ Section and PRYJ CPR Section.