Declension table of ?gāṅgya

Neuter	Singular	Dual	Plural
Nominative	gāṅgyam	gāṅgye	gāṅgyāni
Vocative	gāṅgya	gāṅgye	gāṅgyāni
Accusative	gāṅgyam	gāṅgye	gāṅgyāni
Instrumental	gāṅgyena	gāṅgyābhyām	gāṅgyaiḥ
Dative	gāṅgyāya	gāṅgyābhyām	gāṅgyebhyaḥ
Ablative	gāṅgyāt	gāṅgyābhyām	gāṅgyebhyaḥ
Genitive	gāṅgyasya	gāṅgyayoḥ	gāṅgyānām
Locative	gāṅgye	gāṅgyayoḥ	gāṅgyeṣu

Compound gāṅgya -

Adverb -gāṅgyam -gāṅgyāt