Ex DNR: 12792-->12369-->13237-->12142-->12391
Ex Buxar: 12369-->12391-->12792-->13237-->12142
Ex MGS: 12369-->12792-->12391-->13237
Note position shift for 12391..gt OT by 12792 & re-OT..unrequired OT (12142/13237/12792) & irrecoverable delay!! Which book been followed..worth search!!