Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
lhaih
←
Irish
léigh
(cognate)
←
Proto-Indo-European
*leǵ-
(derived)
←
Latin
legō
(derived)
←
Old Irish
légaid
(inherited)
→
Manx
lhaihder
(suffix)
→
Manx
so-lhaih
(prefix)
→
Manx
yn-lhaih
(prefix)
→
Manx
co-lhaih
(prefix)
→
Manx
neulhaihagh
(affix)
→
Manx
aalhaih
(prefix)
→
Manx
meelhaih
(prefix)