Declension table of ?dhvāṇya

Neuter	Singular	Dual	Plural
Nominative	dhvāṇyam	dhvāṇye	dhvāṇyāni
Vocative	dhvāṇya	dhvāṇye	dhvāṇyāni
Accusative	dhvāṇyam	dhvāṇye	dhvāṇyāni
Instrumental	dhvāṇyena	dhvāṇyābhyām	dhvāṇyaiḥ
Dative	dhvāṇyāya	dhvāṇyābhyām	dhvāṇyebhyaḥ
Ablative	dhvāṇyāt	dhvāṇyābhyām	dhvāṇyebhyaḥ
Genitive	dhvāṇyasya	dhvāṇyayoḥ	dhvāṇyānām
Locative	dhvāṇye	dhvāṇyayoḥ	dhvāṇyeṣu

Compound dhvāṇya -

Adverb -dhvāṇyam -dhvāṇyāt