Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
tojo
←
Asturian
toxu
(cognate)
←
Galician
toxo
(cognate)
←
Portuguese
tojo
(cognate)
←
Undetermined
*toju
(mention)
→
Asturian
toxu
(cognate)
→
Portuguese
tojo
(cognate)