John P. Harrington 
Vocabulary of the Kiowa Language 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The true diphthongs, as they may be termed to distinguish them, from the diphthongized vowels ou, ei, have been listed as follows. Glottalized forms, with the glottal elusive falling between the two elements, have been included in the list. Examples have been found only for part of the possibly occurring diphthongs.