Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
tví-
←
Proto-Germanic
*twi-
(inherited)
←
Proto-Indo-European
*dwi-
(inherited)
←
Proto-Indo-European
*dwóh₁
(mention)
→
Icelandic
tvíund
(affix)
→
Icelandic
tvíhliða
(affix)
→
Icelandic
tvíkynhneigð
(affix)
→
Icelandic
tvíkynhneigður
(affix)
→
Icelandic
tvíræður
(affix)