Old English to Sudyrnish Sound Changes

Early OE ø is retained

{ie,io},eo,{ea,(!ˈ)a(![V,A])} > y,ø,ɐ

θr > r̥

ġ,ɣ > j

l,l̩ > w,u / _[C,#]

{i,e,æ,V}j > iː,ɛi,ai,Vi

{u,æ,V}w > uː,au,Vu

{iu,yu,yi,ui,øi,oi,eu,øu} > œy

Vː > V /_{i,y,u}

ɐ,æ,{ɐː,æː},aː > ə,ɛ,ɛː,ɔː

n̥,ʍ,r̥,l̥ > xn,xw,xr,xl

n,r,l > {n,r,l}ˠ / _[C,ː,#]

xw > h / _Vʷ

VxwV > VwːV

{ç,x,w}{n,w,r,l} > nˠ,w,rˠ,lˠ

V(ː)%[Vː,ə] > Vː%[V,ə] / !V%_

CiV > CːV

VːCː > VCː

{n,r,l}ː > nˠ,rˠ,lˠ

Intervocalic fricative voicing as usual

GVS as usual (uː ignores the soup rule)

ə(!rˠ) > œ / [ˈ_,_ː]

θ,ð > t,d

Cː > C

ɛi,œy,ɔu > ə{i,y,u}

[əː,eː,øː,oː,V]rˠ > ɚ,i˞ː,y˞ː,u˞ː,V˞ / _[C,#]

e˞,ø˞,o˞,V{i˞,y˞,u˞} > i˞,y˞,u˞,V{j,j,w}ɚ

r > ɾ

x,ç > ∅

V{j,w}V,j > VV,ʃ (subject to voicing)