Declension table of ?bhūtakartṛ

Masculine	Singular	Dual	Plural
Nominative	bhūtakartā	bhūtakartārau	bhūtakartāraḥ
Vocative	bhūtakartaḥ	bhūtakartārau	bhūtakartāraḥ
Accusative	bhūtakartāram	bhūtakartārau	bhūtakartṝn
Instrumental	bhūtakartrā	bhūtakartṛbhyām	bhūtakartṛbhiḥ
Dative	bhūtakartre	bhūtakartṛbhyām	bhūtakartṛbhyaḥ
Ablative	bhūtakartuḥ	bhūtakartṛbhyām	bhūtakartṛbhyaḥ
Genitive	bhūtakartuḥ	bhūtakartroḥ	bhūtakartṝṇām
Locative	bhūtakartari	bhūtakartroḥ	bhūtakartṛṣu

Compound bhūtakartṛ -

Adverb -bhūtakartṛ