Declension table of ?vanastha

Neuter	Singular	Dual	Plural
Nominative	vanastham	vanasthe	vanasthāni
Vocative	vanastha	vanasthe	vanasthāni
Accusative	vanastham	vanasthe	vanasthāni
Instrumental	vanasthena	vanasthābhyām	vanasthaiḥ
Dative	vanasthāya	vanasthābhyām	vanasthebhyaḥ
Ablative	vanasthāt	vanasthābhyām	vanasthebhyaḥ
Genitive	vanasthasya	vanasthayoḥ	vanasthānām
Locative	vanasthe	vanasthayoḥ	vanastheṣu

Compound vanastha -

Adverb -vanastham -vanasthāt