Declension table of ?bhūtamaheśvara

Masculine	Singular	Dual	Plural
Nominative	bhūtamaheśvaraḥ	bhūtamaheśvarau	bhūtamaheśvarāḥ
Vocative	bhūtamaheśvara	bhūtamaheśvarau	bhūtamaheśvarāḥ
Accusative	bhūtamaheśvaram	bhūtamaheśvarau	bhūtamaheśvarān
Instrumental	bhūtamaheśvareṇa	bhūtamaheśvarābhyām	bhūtamaheśvaraiḥ bhūtamaheśvarebhiḥ
Dative	bhūtamaheśvarāya	bhūtamaheśvarābhyām	bhūtamaheśvarebhyaḥ
Ablative	bhūtamaheśvarāt	bhūtamaheśvarābhyām	bhūtamaheśvarebhyaḥ
Genitive	bhūtamaheśvarasya	bhūtamaheśvarayoḥ	bhūtamaheśvarāṇām
Locative	bhūtamaheśvare	bhūtamaheśvarayoḥ	bhūtamaheśvareṣu

Compound bhūtamaheśvara -

Adverb -bhūtamaheśvaram -bhūtamaheśvarāt