Declension table of ?pralayana

Neuter	Singular	Dual	Plural
Nominative	pralayanam	pralayane	pralayanāni
Vocative	pralayana	pralayane	pralayanāni
Accusative	pralayanam	pralayane	pralayanāni
Instrumental	pralayanena	pralayanābhyām	pralayanaiḥ
Dative	pralayanāya	pralayanābhyām	pralayanebhyaḥ
Ablative	pralayanāt	pralayanābhyām	pralayanebhyaḥ
Genitive	pralayanasya	pralayanayoḥ	pralayanānām
Locative	pralayane	pralayanayoḥ	pralayaneṣu

Compound pralayana -

Adverb -pralayanam -pralayanāt