Declension table of ?bhayana

Neuter	Singular	Dual	Plural
Nominative	bhayanam	bhayane	bhayanāni
Vocative	bhayana	bhayane	bhayanāni
Accusative	bhayanam	bhayane	bhayanāni
Instrumental	bhayanena	bhayanābhyām	bhayanaiḥ
Dative	bhayanāya	bhayanābhyām	bhayanebhyaḥ
Ablative	bhayanāt	bhayanābhyām	bhayanebhyaḥ
Genitive	bhayanasya	bhayanayoḥ	bhayanānām
Locative	bhayane	bhayanayoḥ	bhayaneṣu

Compound bhayana -

Adverb -bhayanam -bhayanāt