Declension table of ?tadbhāva

Neuter	Singular	Dual	Plural
Nominative	tadbhāvam	tadbhāve	tadbhāvāni
Vocative	tadbhāva	tadbhāve	tadbhāvāni
Accusative	tadbhāvam	tadbhāve	tadbhāvāni
Instrumental	tadbhāvena	tadbhāvābhyām	tadbhāvaiḥ
Dative	tadbhāvāya	tadbhāvābhyām	tadbhāvebhyaḥ
Ablative	tadbhāvāt	tadbhāvābhyām	tadbhāvebhyaḥ
Genitive	tadbhāvasya	tadbhāvayoḥ	tadbhāvānām
Locative	tadbhāve	tadbhāvayoḥ	tadbhāveṣu

Compound tadbhāva -

Adverb -tadbhāvam -tadbhāvāt