Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
forthen
←
Old English
forþon
(inherited)
←
Old English
furþon
(mention)
←
Old English
furþum
(mention)
←
Old English
forþ
(mention)
←
English
forth
(link)
←
Middle English
forthen
(inherited)