Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
syn
←
Old Frisian
sīn
(inherited)
→
Alemannic German
si
(cognate)
→
Alemannic German
siin
(cognate)
→
Luxembourgish
säin
(cognate)
→
Saterland Frisian
sin
(cognate)