Sankhíhten

General information
Proto-language for Iathi, Vasykaa, and Throlyen.

Consonants

 * plosives, nasals and /h/ may be geminate
 * [ɹ] in initial consonant clusters, [r] in syllable coda and intervocallically.
 * geminate /h/ becomes [ħ]

Vowels

 * all vowels can be long

Diphthongs
Permitted diphthongs include /ai/, /au/, /aɨ/, /eɨ/, and /oɨ/.

Phonotactics
Syllable onsets are allowed to be one of the following structures: (h/T)(T)(R/h/s/l), (D)(D)(R/z/l), or (N)(R), where T = {p t k}, R = {ʋ r j ʁ}, D = {b d g}, and N = {m n ŋ}. Clusters with /h/ become phonetic pre- or post-aspirated stops. Syllable medials can be monophthongs or diphthongs. Syllable codas may be (N)(S), where N = {m n ŋ l r} and S = {s z m n ŋ}. All intrasyllable TT, DD or NN clusters must be homorganic, effectively rendering them geminates.

To Iathi

 * hT > T > D > Ð
 * Th > Θ
 * TT > (ΘT) > sT
 * DD > (ÐD) > zD
 * VNN > VN > Ṽ
 * i i: y y: e e: ɯ ɯ: u u: a a: > ɪ i ø y ɛ e ɤ ɯ ʊ u a ɐ
 * a# > ə#
 * Pʋ > F, ʋ > w ! #ʋ > #v
 * Tj > C
 * Kʁ > Q, ʁ > (ʁ/r)?
 * Cl > Cj
 * umlaut, harmony, dissimilation, echo vowel stuff to add later*

To Vasykaa

 * Vn > Ṽ
 * lN > N:
 * Nl > l:
 * ʋ > v [or] ʋ > w > [round+back preceding vowel]