Declension table of ?yāpayiṣyat

Masculine	Singular	Dual	Plural
Nominative	yāpayiṣyan	yāpayiṣyantau	yāpayiṣyantaḥ
Vocative	yāpayiṣyan	yāpayiṣyantau	yāpayiṣyantaḥ
Accusative	yāpayiṣyantam	yāpayiṣyantau	yāpayiṣyataḥ
Instrumental	yāpayiṣyatā	yāpayiṣyadbhyām	yāpayiṣyadbhiḥ
Dative	yāpayiṣyate	yāpayiṣyadbhyām	yāpayiṣyadbhyaḥ
Ablative	yāpayiṣyataḥ	yāpayiṣyadbhyām	yāpayiṣyadbhyaḥ
Genitive	yāpayiṣyataḥ	yāpayiṣyatoḥ	yāpayiṣyatām
Locative	yāpayiṣyati	yāpayiṣyatoḥ	yāpayiṣyatsu

Compound yāpayiṣyat -

Adverb -yāpayiṣyantam