It should be mentioned with reference to the second class or frequentative verbs, that they sometimes take the prefixes, or particles as Roberts prefers to call them, dem, Dup, nang, shait, ksaw in place of iai, e.
"The Khasis"
P. R. T. Gurdon
Bee-wul-lo, a Ngotak, the son of Jee-bar, married: Wun-daile, a Na-gar-nook, Noon-Dup, a No-go-nyuk, Du-bin, a Ballar-oke, Ek-kan, a Ballar-oke, Ming-up, a Ballar-oke, We-jee-bung, a Ballar-oke.
"Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 2 (of 2)"
George Grey
If unhappily you find it, sir- Dup.
"Semiramis and Other Plays Semiramis, Carlotta And The Poet"
Olive Tilford Dargan