It should come last.
The _h_ is chosen to introduce the vowel sound because in the preparation to produce the sound of the letter _h_ the epiglottis is wide open and the vocal cords entirely relaxed, and because less change of the tongue is required when the vowel sound follows.
Preliminary Exercise _Practise this softly on any pitch easy for the voice._ [Music illustration: Hung-ee.

Hung-oo.

Hung-oh.

Hung-aw.

Hung-ah.
Hung-ee _etc._] Begin the tone quietly on an easy pitch and continue it softly to the end.