Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dutch
hept
→
Dutch
heptyl
(confix)
→
Dutch
heptaan
(confix)
→
Dutch
hepteen
(confix)
→
Dutch
heptyn
(confix)