Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
leath-
←
Irish
leath
(mention)
→
Welsh
lled-
(cognate)
→
Irish
leatrom
(affix)
→
Irish
leathchúpla
(affix)
→
Irish
leatosaí
(affix)
→
Irish
leathchúlaí
(affix)
→
Irish
leataca
(affix)
→
Irish
leataobh
(affix)
→
Irish
leathchliathán
(affix)
→
Irish
leath-mhicreanailís
(affix)
→
Irish
leathspéacla
(affix)
→
Irish
leathbhuí
(affix)
→
Irish
leathphingin
(affix)
→
Irish
leithinis
(affix)
→
Irish
leathdhéanamh
(affix)