Pourazu

Vowels

 * Front and back vowels don't co-occur in words (archiphonemes /U/, /O/, and /A/).
 * High vowels are tensed in unstressed syllables before a coda, and when low tone.

Phonotactics
(C)(w, j)V(w, j, ɹ)

Tone
Every polysyllabic word has a high or low stressed tone every two syllables ending at the penultimate. Every other syllable is unmarked.

Floating tones and tone shifts occur very frequently.