Declension table of ?dvyāsya

Neuter	Singular	Dual	Plural
Nominative	dvyāsyam	dvyāsye	dvyāsyāni
Vocative	dvyāsya	dvyāsye	dvyāsyāni
Accusative	dvyāsyam	dvyāsye	dvyāsyāni
Instrumental	dvyāsyena	dvyāsyābhyām	dvyāsyaiḥ
Dative	dvyāsyāya	dvyāsyābhyām	dvyāsyebhyaḥ
Ablative	dvyāsyāt	dvyāsyābhyām	dvyāsyebhyaḥ
Genitive	dvyāsyasya	dvyāsyayoḥ	dvyāsyānām
Locative	dvyāsye	dvyāsyayoḥ	dvyāsyeṣu

Compound dvyāsya -

Adverb -dvyāsyam -dvyāsyāt