Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Alemannic German
ummerittä
←
German
um-
(cognate)
←
Alemannic German
umme
(prefix)
←
Alemannic German
rittä
(prefix)
←
Dutch
ritten
(cognate)