Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
North Frisian
tau
←
North Frisian
twäär
(mention)
←
North Frisian
tou
(mention)
←
Old Frisian
twēne
(derived)
→
North Frisian
tou
(mention)