in tagalog, "ng" is an actual letter. yes, letter. in fact it's the 12th letter in the alphabet. and without further ado..the filipino alphabet is:

A - B - K - D - E - G - H - I - L - M - N - NG - O - P - R - S - T - U - W - Y

in terms of pronouncing it, phoneme-wise it's a nasal. it's like the spanish ñ or like the inflective ending -ing but without the vowel sound and definitely a lot less n.

try it. it's wiggy.