Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bengali
তাই
←
Bengali
তাহা
(cognate)
←
Bengali
তাঁই
(alter)
←
Bengali
তাঁয়
(alter)
←
Bengali
তায়
(alter)
←
Bengali
(alter)
←
Bengali
Varendra
(alter)
←
Bengali
হেতাই
(link)
←
Bengali
হেতি
(link)
←
Sanskrit
तद्
(derived)
→
Assamese
তাই
(cognate)
→
Bengali
হেতি
(compound)
→
Bengali
হেতাই
(compound)