Declension table of ?vyayana

Neuter	Singular	Dual	Plural
Nominative	vyayanam	vyayane	vyayanāni
Vocative	vyayana	vyayane	vyayanāni
Accusative	vyayanam	vyayane	vyayanāni
Instrumental	vyayanena	vyayanābhyām	vyayanaiḥ
Dative	vyayanāya	vyayanābhyām	vyayanebhyaḥ
Ablative	vyayanāt	vyayanābhyām	vyayanebhyaḥ
Genitive	vyayanasya	vyayanayoḥ	vyayanānām
Locative	vyayane	vyayanayoḥ	vyayaneṣu

Compound vyayana -

Adverb -vyayanam -vyayanāt