Syllables
Syllables are CV, CVC, or CVV.

Consonants

	Bilabial	Dental	Alveolar	Palatal	Velar	Pharyngeal	Glottal
Nasal	ʰm m	ʰn n
Stop	pʰ p bʰ b	t d			k kʰ g		ʔ
Fricative	f v	θ ð	s z	ʃ ʒ	x	ħ
Liquid			ɬ l
Approximant	w			j

Vowels

	Front	Center	Back
Close	i		ʊ u
Mid		ə
Open	æ		ɑ

Tones
Proto-A has five phonemic tones, including three register tones and two contour tones: high (˥), mid/neutral (˧), low (˩), 51-falling (˥˩), and 35-rising (˧˥). Typically this is marked orthographically with diacritics on the vowel. Alternatively, it can be marked by a number after the syllable: high (1), mid/neutral (0 or unmarked), low (2), falling (3), rising (4).