Declension table of ?vasnya

Neuter	Singular	Dual	Plural
Nominative	vasnyam	vasnye	vasnyāni
Vocative	vasnya	vasnye	vasnyāni
Accusative	vasnyam	vasnye	vasnyāni
Instrumental	vasnyena	vasnyābhyām	vasnyaiḥ
Dative	vasnyāya	vasnyābhyām	vasnyebhyaḥ
Ablative	vasnyāt	vasnyābhyām	vasnyebhyaḥ
Genitive	vasnyasya	vasnyayoḥ	vasnyānām
Locative	vasnye	vasnyayoḥ	vasnyeṣu

Compound vasnya -

Adverb -vasnyam -vasnyāt