Declension table of ?vidhyādi

Masculine	Singular	Dual	Plural
Nominative	vidhyādiḥ	vidhyādī	vidhyādayaḥ
Vocative	vidhyāde	vidhyādī	vidhyādayaḥ
Accusative	vidhyādim	vidhyādī	vidhyādīn
Instrumental	vidhyādinā	vidhyādibhyām	vidhyādibhiḥ
Dative	vidhyādaye	vidhyādibhyām	vidhyādibhyaḥ
Ablative	vidhyādeḥ	vidhyādibhyām	vidhyādibhyaḥ
Genitive	vidhyādeḥ	vidhyādyoḥ	vidhyādīnām
Locative	vidhyādau	vidhyādyoḥ	vidhyādiṣu

Compound vidhyādi -

Adverb -vidhyādi