Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tocharian A
ṣäk
←
Proto-Indo-European
*swéḱs
(inherited)
←
Tocharian B
ṣkas
(cognate)
→
Tocharian B
ṣkas
(cognate)