Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
-amos
←
Spanish
-emos
(link)
←
Spanish
-imos
(link)
←
Latin
-āmus
(inherited)
←
Latin
-āvimus
(inherited)
←
Latin
-eāmus
(inherited)
←
Latin
-āmus
(inherited)
←
Latin
-iāmus
(inherited)