Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Miyako
っゔぁ
←
Proto-Japonic
*uya
(inherited)
←
Proto-Ryukyuan
*uya
(inherited)
←
Yaeyama
わー
(cognate)
→
Yaeyama
わー
(cognate)