Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Finnish
helpottaa
←
Finnish
helppo
(suffix)
←
Finnish
ttaa
(suffix)
→
Finnish
helpotus
(suffix)
→
Finnish
helpottua
(suffix)
→
Finnish
helpottaminen
(affix)
→
Finnish
helpottava
(affix)