Declension table of ?vrataka

Neuter	Singular	Dual	Plural
Nominative	vratakam	vratake	vratakāni
Vocative	vrataka	vratake	vratakāni
Accusative	vratakam	vratake	vratakāni
Instrumental	vratakena	vratakābhyām	vratakaiḥ
Dative	vratakāya	vratakābhyām	vratakebhyaḥ
Ablative	vratakāt	vratakābhyām	vratakebhyaḥ
Genitive	vratakasya	vratakayoḥ	vratakānām
Locative	vratake	vratakayoḥ	vratakeṣu

Compound vrataka -

Adverb -vratakam -vratakāt