Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Pnar
at
←
Proto-Khasian
*ʔa:t
(inherited)
←
Khasi
at
(cognate)
←
Proto-Mon-Khmer
*as
(derived)
←
Nyaheun
-
(cognate)
←
Pacoh
ayh
(cognate)
←
Riang
-
(cognate)
←
Semai
as
(cognate)