Declension table of ?vādyaka

Neuter	Singular	Dual	Plural
Nominative	vādyakam	vādyake	vādyakāni
Vocative	vādyaka	vādyake	vādyakāni
Accusative	vādyakam	vādyake	vādyakāni
Instrumental	vādyakena	vādyakābhyām	vādyakaiḥ
Dative	vādyakāya	vādyakābhyām	vādyakebhyaḥ
Ablative	vādyakāt	vādyakābhyām	vādyakebhyaḥ
Genitive	vādyakasya	vādyakayoḥ	vādyakānām
Locative	vādyake	vādyakayoḥ	vādyakeṣu

Compound vādyaka -

Adverb -vādyakam -vādyakāt