-ng-

• -g- — for compounds with preceding stem ending with letter ⟨n⟩.
• -m- — for compounds with preceding stem ending in a vowel, but next stem starts with the letter ⟨b⟩ or ⟨p⟩.
• -n- — for compounds with preceding stem ending in a vowel, but next stem starts with the letter ⟨d⟩, ⟨l⟩, ⟨r⟩, ⟨s⟩, or ⟨t⟩.

From -ng (enclitic suffix).

• (Standard Tagalog) IPA^(key): /ŋ/ [ŋ]

-ng- (Baybayin spelling ᜅ᜔)

1. compound interfix, connecting the adjective stem to the noun stem, after the preceding stem ends in a vowel

   ‎haba + ‎-ng- + ‎buhay → ‎habang-buhay

   ‎bunga + ‎-ng- + ‎kahoy → ‎bungangkahoy