Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Kannada
ಪತ್ತು
←
Proto-Dravidian
*patt
(inherited)
←
Malayalam
പത്ത്
(cognate)
←
Tamil
பத்து
(cognate)
←
Telugu
పది
(cognate)
→
Kannada
ಹತ್ತು
(inherited)