Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lahu
ɔ̀-
←
Burmese
အ-
(cognate)
←
Old Chinese
-
(cognate)
←
Proto-Sino-Tibetan
*ʔa(ŋ/k)-
(inherited)
←
Proto-Loloish
*ʔaŋ ~ *ʔak
(inherited)