Declension table of ?nivastavya

Neuter	Singular	Dual	Plural
Nominative	nivastavyam	nivastavye	nivastavyāni
Vocative	nivastavya	nivastavye	nivastavyāni
Accusative	nivastavyam	nivastavye	nivastavyāni
Instrumental	nivastavyena	nivastavyābhyām	nivastavyaiḥ
Dative	nivastavyāya	nivastavyābhyām	nivastavyebhyaḥ
Ablative	nivastavyāt	nivastavyābhyām	nivastavyebhyaḥ
Genitive	nivastavyasya	nivastavyayoḥ	nivastavyānām
Locative	nivastavye	nivastavyayoḥ	nivastavyeṣu

Compound nivastavya -

Adverb -nivastavyam -nivastavyāt