Declension table of bhūyastva

Neuter	Singular	Dual	Plural
Nominative	bhūyastvam	bhūyastve	bhūyastvāni
Vocative	bhūyastva	bhūyastve	bhūyastvāni
Accusative	bhūyastvam	bhūyastve	bhūyastvāni
Instrumental	bhūyastvena	bhūyastvābhyām	bhūyastvaiḥ
Dative	bhūyastvāya	bhūyastvābhyām	bhūyastvebhyaḥ
Ablative	bhūyastvāt	bhūyastvābhyām	bhūyastvebhyaḥ
Genitive	bhūyastvasya	bhūyastvayoḥ	bhūyastvānām
Locative	bhūyastve	bhūyastvayoḥ	bhūyastveṣu

Compound bhūyastva -

Adverb -bhūyastvam -bhūyastvāt