Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Polish
twierdzić
←
Polish
twardy
(mention)
←
Proto-Slavic
*tvьrditi
(inherited)
→
Polish
potwierdzić
(affix)
→
Polish
utwierdzić
(affix)
→
Polish
stwierdzić
(affix)
→
Polish
zatwierdzić
(affix)
→
Polish
przytwierdzić
(affix)