Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
thu
←
Irish
tú
(cognate)
←
Manx
oo
(cognate)
←
Old Irish
tú
(inherited)
→
Scottish Gaelic
riut
(mention)
→
Scottish Gaelic
bhuat
(mention)
→
Scottish Gaelic
fodhad
(mention)