Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Calabrian Greek
dìo
←
Ancient Greek
δύο
(inherited(grk-cal/el))
←
Proto-Hellenic
*dúwō
(inherited(grk-cal/el))
←
Proto-Indo-European
*dwóh₁
(inherited(grk-cal/el))