Declension table of ?navavastra

Neuter	Singular	Dual	Plural
Nominative	navavastram	navavastre	navavastrāṇi
Vocative	navavastra	navavastre	navavastrāṇi
Accusative	navavastram	navavastre	navavastrāṇi
Instrumental	navavastreṇa	navavastrābhyām	navavastraiḥ
Dative	navavastrāya	navavastrābhyām	navavastrebhyaḥ
Ablative	navavastrāt	navavastrābhyām	navavastrebhyaḥ
Genitive	navavastrasya	navavastrayoḥ	navavastrāṇām
Locative	navavastre	navavastrayoḥ	navavastreṣu

Compound navavastra -

Adverb -navavastram -navavastrāt