This page lists the current set [α] of sound changes that separate Proto-Drake from the parent language. (This page is basically complete. If you find incongruities, bug me about them.)

1. {dZ, tS} → {ż, ṡ}
2. V{y, w} → V: / #C_C
3. {e:, o:} → {i, u}
4. {o, e, a} → ä
5. {i, u} → ə
6. V: → V
7. -VC- → -CV- / verbal roots
8. b → m / #_Vn
9. g → k / {#dV_, #wV_}
10. γ → g / #_Vx-
11. {C[+ej], ʕ, ħ}V → {C[-ej], ʔ, h}V[+cr] / #_
12. b → w
13. C[+labvel] → C[+{pal, vel, lab}][-labvel] / _{{i, e}, {u, ə}, {o, a, ä}}
14. p → Ø / #_
15. p → f
16. f → h
17. w → γ
18. C[+ej] → C: