Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
certa
→
Ido
certe
(suffix)
→
Ido
certigar
(affix)
→
Ido
certeskar
(suffix)
→
Ido
certajo
(suffix)