Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
didapper
←
Old English
dūfedoppa
(derived)
←
Old English
dūfan
(mention)
←
Old English
*doppa
(mention)
←
English
dop
(cognate)
←
English
dive
(compound)
←
English
dop
(compound)
←
English
-er
(compound)
←
Middle English
dydoppar
(inherited)
←
Middle English
douedoppe
(mention)
←
Middle English
deuedep
(mention)
←
Middle English
dyuedap
(mention)
←
Middle English
-er
(mention)