Declension table of ?pūṇayiṣyat

Masculine	Singular	Dual	Plural
Nominative	pūṇayiṣyan	pūṇayiṣyantau	pūṇayiṣyantaḥ
Vocative	pūṇayiṣyan	pūṇayiṣyantau	pūṇayiṣyantaḥ
Accusative	pūṇayiṣyantam	pūṇayiṣyantau	pūṇayiṣyataḥ
Instrumental	pūṇayiṣyatā	pūṇayiṣyadbhyām	pūṇayiṣyadbhiḥ
Dative	pūṇayiṣyate	pūṇayiṣyadbhyām	pūṇayiṣyadbhyaḥ
Ablative	pūṇayiṣyataḥ	pūṇayiṣyadbhyām	pūṇayiṣyadbhyaḥ
Genitive	pūṇayiṣyataḥ	pūṇayiṣyatoḥ	pūṇayiṣyatām
Locative	pūṇayiṣyati	pūṇayiṣyatoḥ	pūṇayiṣyatsu

Compound pūṇayiṣyat -

Adverb -pūṇayiṣyantam