Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
a-
←
Old English
ar-
(mention)
←
German
er-
(cognate)
←
Proto-Germanic
*uz-
(inherited)
←
Old High German
ar-
(cognate)
←
Old High German
ir-
(mention)
→
English
abb
(mention)
→
English
abode
(mention)
→
English
aghast
(inherited)
→
English
around
(inherited)
→
English
a
(inherited)
→
English
amanse
(mention)
→
English
astart
(inherited)
→
English
atene
(mention)
→
Old English
abufan
(affix)
→
Old English
alibban
(affix)
→
Old English
awyrtwalian
(link)
→
Old Saxon
a-
(cognate)