Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
eis
←
Proto-Germanic
*uns
(inherited)
←
Proto-Germanic
*unseraz
(inherited)
←
Old High German
uns
(inherited)
←
Luxembourgish
äis
(link)
←
Luxembourgish
ons
(link)
→
Luxembourgish
Gäns
(mention)