Declension table of ?nayanatva

Neuter	Singular	Dual	Plural
Nominative	nayanatvam	nayanatve	nayanatvāni
Vocative	nayanatva	nayanatve	nayanatvāni
Accusative	nayanatvam	nayanatve	nayanatvāni
Instrumental	nayanatvena	nayanatvābhyām	nayanatvaiḥ
Dative	nayanatvāya	nayanatvābhyām	nayanatvebhyaḥ
Ablative	nayanatvāt	nayanatvābhyām	nayanatvebhyaḥ
Genitive	nayanatvasya	nayanatvayoḥ	nayanatvānām
Locative	nayanatve	nayanatvayoḥ	nayanatveṣu

Compound nayanatva -

Adverb -nayanatvam -nayanatvāt