Declension table of mahāpātaka

Neuter	Singular	Dual	Plural
Nominative	mahāpātakam	mahāpātake	mahāpātakāni
Vocative	mahāpātaka	mahāpātake	mahāpātakāni
Accusative	mahāpātakam	mahāpātake	mahāpātakāni
Instrumental	mahāpātakena	mahāpātakābhyām	mahāpātakaiḥ
Dative	mahāpātakāya	mahāpātakābhyām	mahāpātakebhyaḥ
Ablative	mahāpātakāt	mahāpātakābhyām	mahāpātakebhyaḥ
Genitive	mahāpātakasya	mahāpātakayoḥ	mahāpātakānām
Locative	mahāpātake	mahāpātakayoḥ	mahāpātakeṣu

Compound mahāpātaka -

Adverb -mahāpātakam -mahāpātakāt