Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Swedish
þva
←
Proto-Germanic
*þwahaną
(inherited)
←
Old Norse
þvá
(inherited)
→
Swedish
två
(inherited)
→
Swedish
tvaga
(inherited)