All the triphthongs—_aoi_, _eoi_, _iai_, _iui_, _uai_—are pronounced
long, and differ but little in their sounds from those of the long
diphthongs from which they are formed. They differ mainly in two
particulars—first, in a slight prolongation of the diphthongal sound;
secondly, in imparting to the immediately succeeding consonant, on
account of its nearness to the slender vowel _i_, a liquid, slender
sound, which it would not otherwise receive. _Aoi_ is sounded like _uee_
in _Queen_; _iai_, like the diphthong _ia_ (_ee_), except that the final
_i_ gives to the consonant that follows a slender or liquid sound; _iui_,
like _eeyu_, sounds that cannot be represented in English, as heard in
the Irish word _ciuin_, pronounced _keeyuin_, in one syllable.