Declension table of ?gacchaya

Neuter	Singular	Dual	Plural
Nominative	gacchayam	gacchaye	gacchayāni
Vocative	gacchaya	gacchaye	gacchayāni
Accusative	gacchayam	gacchaye	gacchayāni
Instrumental	gacchayena	gacchayābhyām	gacchayaiḥ
Dative	gacchayāya	gacchayābhyām	gacchayebhyaḥ
Ablative	gacchayāt	gacchayābhyām	gacchayebhyaḥ
Genitive	gacchayasya	gacchayayoḥ	gacchayānām
Locative	gacchaye	gacchayayoḥ	gacchayeṣu

Compound gacchaya -

Adverb -gacchayam -gacchayāt