Declension table of ?duḥṣvapnya

Neuter	Singular	Dual	Plural
Nominative	duḥṣvapnyam	duḥṣvapnye	duḥṣvapnyāni
Vocative	duḥṣvapnya	duḥṣvapnye	duḥṣvapnyāni
Accusative	duḥṣvapnyam	duḥṣvapnye	duḥṣvapnyāni
Instrumental	duḥṣvapnyena	duḥṣvapnyābhyām	duḥṣvapnyaiḥ
Dative	duḥṣvapnyāya	duḥṣvapnyābhyām	duḥṣvapnyebhyaḥ
Ablative	duḥṣvapnyāt	duḥṣvapnyābhyām	duḥṣvapnyebhyaḥ
Genitive	duḥṣvapnyasya	duḥṣvapnyayoḥ	duḥṣvapnyānām
Locative	duḥṣvapnye	duḥṣvapnyayoḥ	duḥṣvapnyeṣu

Compound duḥṣvapnya -

Adverb -duḥṣvapnyam -duḥṣvapnyāt