User:Soap/Birch

This is not the original Birch, but ratehr a languyage that ios spoekn in Mevumep.

Conosnnats

Rounded bilabials:    pʷ  mʷ  ɸ   w         /a i u ə/
Spread bilabials:     p   m                 /a     ə/
Linguolabials:        pʲ  mʲ                /a i u ə/
Dentals:              ṭ   ṇ                 /a   u ə/
Rounded alveolars:            sʷ      rʷ    /a i u ə/
Plain alveolars:      t   n   s   l   r     /a     ə/
Palatoalveolars:      č   ň   š   λ   ř     /a i u ə/
Palatals:                     ś   y         /a i u ə/
Palatovelars:         ć   ń                 /  i    /
Velars:               k   ŋ   h  (Ø)        /a     ə/
Labiovelars:          kʷ  ŋʷ                /a i u ə/

All four vowels could occur long, but unlike Play there were no superheavy syllables.

Northern Branch P

This is the most conservative branch of the family. It fills a gap early on and thus becomes stable.

1. The labialized consonants kʷ ŋʷ shifted to pʷ mʷ before /a ə/ (the "shadow" shift), and otherwise to k ŋ (thus filling the gap). At the surface level, the latter shift was about IPA [y] shifting to [i] and IPA [u] staying as it was; that is, kʷu > ku was just a matter of analysis.
2. Meanwhile the labial fricative ɸ shifted to h before any /i u/.
3. The labial approximant w became b before /a ə/ and possibly in limited circumstances also before /i/ or /u/ (note that it is very common before these high vowels but was usually not audible, as it simply produced a rounded vowel; the exceptions would be in vowel sequences).