Flei/Proto

Before tone split

Consonants: (s)m (s)n (s)l (s)r (s)w j p t k b d g s z

Vowels and tone: i ī(ˀ) e ē(ˀ) a ā(ˀ) o ō(ˀ) u ū(ˀ) ai(ˀ) ei(ˀ) oi(ˀ) au(ˀ) eu(ˀ) ou(ˀ) aR(ˀ) iR(ˀ) uR(ˀ) (R = m/n/l/r)

(i.e. long vowels may or may not have the Balto-Slavic acute)

After tone split

Consonants: m n l r p t k w j s

Low u /ù/

High u /ú/

Low ū /ùú/

High ū /úú/

Low ūˀ /ùù/

High ūˀ /úù/