Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Mon-Khmer
*rit ~ *riit
→
Khmer
រឹត
(inherited)
→
Khmer
រីត
(inherited)
→
Khmer
រឺត
(inherited)