Declension table of ?sopacaya

Masculine	Singular	Dual	Plural
Nominative	sopacayaḥ	sopacayau	sopacayāḥ
Vocative	sopacaya	sopacayau	sopacayāḥ
Accusative	sopacayam	sopacayau	sopacayān
Instrumental	sopacayena	sopacayābhyām	sopacayaiḥ sopacayebhiḥ
Dative	sopacayāya	sopacayābhyām	sopacayebhyaḥ
Ablative	sopacayāt	sopacayābhyām	sopacayebhyaḥ
Genitive	sopacayasya	sopacayayoḥ	sopacayānām
Locative	sopacaye	sopacayayoḥ	sopacayeṣu

Compound sopacaya -

Adverb -sopacayam -sopacayāt