Declension table of ?sayāvan

Neuter	Singular	Dual	Plural
Nominative	sayāva	sayāvnī sayāvanī	sayāvāni
Vocative	sayāvan sayāva	sayāvnī sayāvanī	sayāvāni
Accusative	sayāva	sayāvnī sayāvanī	sayāvāni
Instrumental	sayāvnā	sayāvabhyām	sayāvabhiḥ
Dative	sayāvne	sayāvabhyām	sayāvabhyaḥ
Ablative	sayāvnaḥ	sayāvabhyām	sayāvabhyaḥ
Genitive	sayāvnaḥ	sayāvnoḥ	sayāvnām
Locative	sayāvni sayāvani	sayāvnoḥ	sayāvasu

Compound sayāva -

Adverb -sayāva -sayāvam