After most of the day my message hasn't appeared. I'll try again.
Other ex.:
uK>üKY
anguis L; óphis , ékhis G; waNz^ = snake Pol; awj Ar;
unrel. to that change is borrowing of
az^i- Av; >> [met.] iz^ = snake/viper Ar;
with met. (probably).
Tu
>>
This new front ü caused preceding T > TY in:
hardus Got; hard E; kratús = strong G; karcr = hard Ar;
cado: = fall L; cHacnum Ar;
>>
sva:dú- = sweet / mellifluous S;
kHaLcHr = sweet Ar;
kHaLcHnum (v) = hunger Ar;
with -L- from contam. < salt
chand- = appear (good) / please, chándu- = pleasing RV S; saDayeiti = appear YAv; cHncam = rejoice Ar;
with chándu- cogn. the source of d > dzY > ts
(then affr. assim. as in cHacnum;
gignó:sko: G; c^anac^Hem Ar; but canawtH -i- = an acquaintance Ar; )
I’ve noticed the Tu changes all happen in C-clusters; perhaps it was reg. dep. on exact env. of C.
More ev. of u>ü may come from the failure of ey > iy ( > i ) by ü in:
lezu Ar; liez^ùvis [mix w lick] Lth;
aló:pe:x G; aLue:s Ar;
but g
aLuesu Ar;