Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Finnish
kahdeksantoista
←
Finnish
kahdeksan
(affix)
←
Finnish
-toista
(affix)
←
Proto-Finnic
*kakteksa toicta kümmentä
(inherited)
→
Estonian
kaheksateist
(cognate)
→
Finnish
kahdeksantoistasataa
(affix)
→
Finnish
kahdeksantoistavuotias
(affix)
→
Ingrian
kaheksantoist
(cognate)