Declension table of ?bhīṣana

Neuter	Singular	Dual	Plural
Nominative	bhīṣanam	bhīṣane	bhīṣanāni
Vocative	bhīṣana	bhīṣane	bhīṣanāni
Accusative	bhīṣanam	bhīṣane	bhīṣanāni
Instrumental	bhīṣanena	bhīṣanābhyām	bhīṣanaiḥ
Dative	bhīṣanāya	bhīṣanābhyām	bhīṣanebhyaḥ
Ablative	bhīṣanāt	bhīṣanābhyām	bhīṣanebhyaḥ
Genitive	bhīṣanasya	bhīṣanayoḥ	bhīṣanānām
Locative	bhīṣane	bhīṣanayoḥ	bhīṣaneṣu

Compound bhīṣana -

Adverb -bhīṣanam -bhīṣanāt