nge-

• ng- (mainly before vowels or k)
• ny- (mainly before s and c)
• m- (mainly before p)
• n- (mainly before t)

From Betawi nge-, from Javanese nge-.

• IPA^(key): /ŋə/

ngê-

1. (colloquial, chiefly Java) used to mark active subject on a verb. Usually not used in a direct imperative sentence

   hapus (“to delete”) > ngehapus

   aduk (“to mix”) > ngaduk

   cobain (“to try”) > nyobain

   peres (“to squeeze”) > meres

   tulis (“to write”) > nulis

It's optional.

Inherited from Old Javanese (m)aN-, from Proto-Malayo-Polynesian *maN-.

• IPA^(key): /ŋə/

nge-

1. Used to form an active verb.