Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
opt
←
Proto-Germanic
*ufta
(inherited)
←
Proto-Germanic
*uftō
(mention)
→
Danish
ofte
(derived)
→
Icelandic
oft
(mention)
→
Norwegian Bokmål
ofte
(derived)
→
Norwegian Nynorsk
ofte
(derived)
→
Old Norse
optligr
(suffix)
→
Old Norse
optliga
(suffix)