Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Dutch
*twēntig
→
Afrikaans
twintig
(inherited)
→
Middle Dutch
twintich
(inherited)
→
Dutch
twintig
(inherited)
→
Zealandic
twintig
(inherited)