Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Sino-Tibetan
*m-ʔa
→
Jingpho
ma-a
(inherited)
→
Burmese
အ
(inherited)
→
Chinese
啞
(inherited)