These presents are called " nasal infix presents " or simply " nasal presents " and are typically active transitive verbs, often with durative aspect.
2.
Unlike the common verb root, the limited action root is not compatible with the ( optional ) intensifier suffix-or and the suffix encoding progressive or durative aspect (-endeg /-ox ) ( more in ).
परिभाषा
the aspect of a verb that expresses its duration पर्याय: durative,
मोबाइल