Declension table of ?sopādhika

Masculine	Singular	Dual	Plural
Nominative	sopādhikaḥ	sopādhikau	sopādhikāḥ
Vocative	sopādhika	sopādhikau	sopādhikāḥ
Accusative	sopādhikam	sopādhikau	sopādhikān
Instrumental	sopādhikena	sopādhikābhyām	sopādhikaiḥ sopādhikebhiḥ
Dative	sopādhikāya	sopādhikābhyām	sopādhikebhyaḥ
Ablative	sopādhikāt	sopādhikābhyām	sopādhikebhyaḥ
Genitive	sopādhikasya	sopādhikayoḥ	sopādhikānām
Locative	sopādhike	sopādhikayoḥ	sopādhikeṣu

Compound sopādhika -

Adverb -sopādhikam -sopādhikāt