Proto-Yŭshinami

Proto-Yŭshinami, from Proto-Yŭshinami goặ-tsa-s-nám, meaning holy book, was the common ancestor of the Yŭshinami languages. It was notable for its vast vowel syllabary and limited number of consonants, which it passed onto its descendants. Grammatically, it had a simple adjective and adverb system, which was contrasted with an advanced noun classification.