Declension table of ?sapratyaya

Masculine	Singular	Dual	Plural
Nominative	sapratyayaḥ	sapratyayau	sapratyayāḥ
Vocative	sapratyaya	sapratyayau	sapratyayāḥ
Accusative	sapratyayam	sapratyayau	sapratyayān
Instrumental	sapratyayena	sapratyayābhyām	sapratyayaiḥ sapratyayebhiḥ
Dative	sapratyayāya	sapratyayābhyām	sapratyayebhyaḥ
Ablative	sapratyayāt	sapratyayābhyām	sapratyayebhyaḥ
Genitive	sapratyayasya	sapratyayayoḥ	sapratyayānām
Locative	sapratyaye	sapratyayayoḥ	sapratyayeṣu

Compound sapratyaya -

Adverb -sapratyayam -sapratyayāt