Declension table of ?abhuva

Neuter	Singular	Dual	Plural
Nominative	abhuvam	abhuve	abhuvāni
Vocative	abhuva	abhuve	abhuvāni
Accusative	abhuvam	abhuve	abhuvāni
Instrumental	abhuvena	abhuvābhyām	abhuvaiḥ
Dative	abhuvāya	abhuvābhyām	abhuvebhyaḥ
Ablative	abhuvāt	abhuvābhyām	abhuvebhyaḥ
Genitive	abhuvasya	abhuvayoḥ	abhuvānām
Locative	abhuve	abhuvayoḥ	abhuveṣu

Compound abhuva -

Adverb -abhuvam -abhuvāt