Declension table of ?vipatna

Masculine	Singular	Dual	Plural
Nominative	vipatnaḥ	vipatnau	vipatnāḥ
Vocative	vipatna	vipatnau	vipatnāḥ
Accusative	vipatnam	vipatnau	vipatnān
Instrumental	vipatnena	vipatnābhyām	vipatnaiḥ vipatnebhiḥ
Dative	vipatnāya	vipatnābhyām	vipatnebhyaḥ
Ablative	vipatnāt	vipatnābhyām	vipatnebhyaḥ
Genitive	vipatnasya	vipatnayoḥ	vipatnānām
Locative	vipatne	vipatnayoḥ	vipatneṣu

Compound vipatna -

Adverb -vipatnam -vipatnāt