Karnatakabhashabhushana 8.3

However, those beginning with the sounds da, dapa, and va are respectively the past, present, and future.

Those case inflections, however, beginning with da, dapa, and the sound va, are to be known, in order, by the technical terms 'past' [bhūtavatī], 'present' [vartamānā], and 'future' [bhaviṣyantī].

Of the past:

dam,

dar,

day,

dir,

den,

devu.

Of the present:

dapaṁ,

dapar,

dapay,

dapir,

dapen,

[and] dapevu.

For the future [tense]:

vaṁ,

var,

vay,

vir,

ven,

[and] vevu.