Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
eli-
←
Proto-Germanic
*ali-
(inherited)
←
Proto-Germanic
*alji-
(mention)
←
Proto-Germanic
*aljaz
(mention)
←
Proto-West Germanic
*alljas
(inherited)
→
Old English
el-
(cognate)