Mununja the butterfly as told by Don Bell with bilingual text and commentary by Chris Illert. ACT & District Aboriginal Council of Elders Association Inc. In the aborginal language of SE Australia. An extract reproduced for study purposes.
This work explains how it uses an alphabet of 18 characters comprised of 4 vowels and 14 consonants. In layman's terms it explains there's no e or o, nor consonants c f h j k p q s t v x z.