Declension table of ?bhūstha

Neuter	Singular	Dual	Plural
Nominative	bhūstham	bhūsthe	bhūsthāni
Vocative	bhūstha	bhūsthe	bhūsthāni
Accusative	bhūstham	bhūsthe	bhūsthāni
Instrumental	bhūsthena	bhūsthābhyām	bhūsthaiḥ
Dative	bhūsthāya	bhūsthābhyām	bhūsthebhyaḥ
Ablative	bhūsthāt	bhūsthābhyām	bhūsthebhyaḥ
Genitive	bhūsthasya	bhūsthayoḥ	bhūsthānām
Locative	bhūsthe	bhūsthayoḥ	bhūstheṣu

Compound bhūstha -

Adverb -bhūstham -bhūsthāt