Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Elfdalian
brettja
←
Proto-Germanic
*brakjaną
(inherited)
←
Proto-Indo-European
*spreg-
(mention)
←
Proto-Indo-European
*bʰreg-
(mention)
→
Westrobothnian
braittj
(cognate)