Declension table of ?sañceya

Neuter	Singular	Dual	Plural
Nominative	sañceyam	sañceye	sañceyāni
Vocative	sañceya	sañceye	sañceyāni
Accusative	sañceyam	sañceye	sañceyāni
Instrumental	sañceyena	sañceyābhyām	sañceyaiḥ
Dative	sañceyāya	sañceyābhyām	sañceyebhyaḥ
Ablative	sañceyāt	sañceyābhyām	sañceyebhyaḥ
Genitive	sañceyasya	sañceyayoḥ	sañceyānām
Locative	sañceye	sañceyayoḥ	sañceyeṣu

Compound sañceya -

Adverb -sañceyam -sañceyāt