Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
beth
←
Proto-Celtic
*kʷezdis
(inherited)
←
Welsh
pa beth
(mention)
←
Welsh
peth
(mention)
←
Welsh
pa
(mention)
←
Welsh
be’
(link)
←
Welsh
pa beth
(link)
←
Welsh
peth
(mention)
→
Welsh
ta
(link)
→
Welsh
ta
(link)
→
Welsh
ta
(link)
→
Welsh
be'
(contraction of)
→
Welsh
yn hyn o beth
(compound)