Declension table of ?vṛtraśaṅku

Masculine	Singular	Dual	Plural
Nominative	vṛtraśaṅkuḥ	vṛtraśaṅkū	vṛtraśaṅkavaḥ
Vocative	vṛtraśaṅko	vṛtraśaṅkū	vṛtraśaṅkavaḥ
Accusative	vṛtraśaṅkum	vṛtraśaṅkū	vṛtraśaṅkūn
Instrumental	vṛtraśaṅkunā	vṛtraśaṅkubhyām	vṛtraśaṅkubhiḥ
Dative	vṛtraśaṅkave	vṛtraśaṅkubhyām	vṛtraśaṅkubhyaḥ
Ablative	vṛtraśaṅkoḥ	vṛtraśaṅkubhyām	vṛtraśaṅkubhyaḥ
Genitive	vṛtraśaṅkoḥ	vṛtraśaṅkvoḥ	vṛtraśaṅkūnām
Locative	vṛtraśaṅkau	vṛtraśaṅkvoḥ	vṛtraśaṅkuṣu

Compound vṛtraśaṅku -

Adverb -vṛtraśaṅku