[...] in such a language as this [Southern Paiute], spirants, whether voiced or voiceless, and voiceless vowels are not phonemes but are merely phonetic reflexes of stopped consonants and voiced vowels under fixed dyamic conditions. Long consonants and long vowels are sub-phonemes [...] The latter are phonologically resolvable into short vowel plus short vowel, i.e., into two syllables of unit length (moras), of which the second begins with a zero consonant.
- Sapir (1933b), a pag.51