Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
at-
←
Old English
æt-
(inherited)
←
English
ad-
(doublet)
←
English
at
(link)
←
Middle English
at-
(inherited)
←
Middle English
et-
(mention)
←
Middle English
æt-
(mention)
→
English
ad-
(doublet)
→
English
attenuate
(mention)
→
English
astand
(mention)