Declension table of ?viśaṅka

Neuter	Singular	Dual	Plural
Nominative	viśaṅkam	viśaṅke	viśaṅkāni
Vocative	viśaṅka	viśaṅke	viśaṅkāni
Accusative	viśaṅkam	viśaṅke	viśaṅkāni
Instrumental	viśaṅkena	viśaṅkābhyām	viśaṅkaiḥ
Dative	viśaṅkāya	viśaṅkābhyām	viśaṅkebhyaḥ
Ablative	viśaṅkāt	viśaṅkābhyām	viśaṅkebhyaḥ
Genitive	viśaṅkasya	viśaṅkayoḥ	viśaṅkānām
Locative	viśaṅke	viśaṅkayoḥ	viśaṅkeṣu

Compound viśaṅka -

Adverb -viśaṅkam -viśaṅkāt