Declension table of ?vipātana

Neuter	Singular	Dual	Plural
Nominative	vipātanam	vipātane	vipātanāni
Vocative	vipātana	vipātane	vipātanāni
Accusative	vipātanam	vipātane	vipātanāni
Instrumental	vipātanena	vipātanābhyām	vipātanaiḥ
Dative	vipātanāya	vipātanābhyām	vipātanebhyaḥ
Ablative	vipātanāt	vipātanābhyām	vipātanebhyaḥ
Genitive	vipātanasya	vipātanayoḥ	vipātanānām
Locative	vipātane	vipātanayoḥ	vipātaneṣu

Compound vipātana -

Adverb -vipātanam -vipātanāt