Karnatakabhashabhushana 3.4

In the dual and plural, gaḷ [comes] first.

At the beginning of those case inflections, when duality or plurality is intended to be expressed, there is the augment gaḷ.

In duality:

kaṇgaḷ;

kaṇgaḷaṁ;

kaṇgaḷiṁ;

kaṇgaḷge;

kaṇgaḷattaṇiṁ;

kaṇgaḷa;

kaṇgaḷoḷ.

In plurality:

kuruḷgaḷ,

kuruḷgaḷaṁ,

kuruḷgaḷiṁ,

kuruḷgaḷge,

kuruḷgaḷattaṇiṁ,

kuruḷgaḷa,

[and] kuruḷgaḷoḷ.