The letters used for writing Oriya can be sorted into five groups according to their shape:

Those with a top hoop attached to the distinctive shape eg ka, ca

Those with a top hoop with a tail or "handle" at the bottom eg i, ra

Those with a top curve and a bar on the right-hand side eg ga, ṇa

Those with a bottom curve and a bar on the right-hand side eg a, tha

A few miscellaneous letters such as e and ṭha