Declension table of ?niṃsāna

Masculine	Singular	Dual	Plural
Nominative	niṃsānaḥ	niṃsānau	niṃsānāḥ
Vocative	niṃsāna	niṃsānau	niṃsānāḥ
Accusative	niṃsānam	niṃsānau	niṃsānān
Instrumental	niṃsānena	niṃsānābhyām	niṃsānaiḥ niṃsānebhiḥ
Dative	niṃsānāya	niṃsānābhyām	niṃsānebhyaḥ
Ablative	niṃsānāt	niṃsānābhyām	niṃsānebhyaḥ
Genitive	niṃsānasya	niṃsānayoḥ	niṃsānānām
Locative	niṃsāne	niṃsānayoḥ	niṃsāneṣu

Compound niṃsāna -

Adverb -niṃsānam -niṃsānāt