-as* Perfect-tense verb modifier.
-is* Progressive verb modifier.
pr* To belong to, for.
rg* Desire, urge, drive, want. Indicates desire only, not need or an act of seeking or imploring.
-t* (1) Passive-tense verb modifier.
(2) Constructor of ordinal words.
-urj* Imperative constructor, indicating need or requirement. Does not indicate mere desire.

Notes