Declension table of ?sandṛbdhatva

Neuter	Singular	Dual	Plural
Nominative	sandṛbdhatvam	sandṛbdhatve	sandṛbdhatvāni
Vocative	sandṛbdhatva	sandṛbdhatve	sandṛbdhatvāni
Accusative	sandṛbdhatvam	sandṛbdhatve	sandṛbdhatvāni
Instrumental	sandṛbdhatvena	sandṛbdhatvābhyām	sandṛbdhatvaiḥ
Dative	sandṛbdhatvāya	sandṛbdhatvābhyām	sandṛbdhatvebhyaḥ
Ablative	sandṛbdhatvāt	sandṛbdhatvābhyām	sandṛbdhatvebhyaḥ
Genitive	sandṛbdhatvasya	sandṛbdhatvayoḥ	sandṛbdhatvānām
Locative	sandṛbdhatve	sandṛbdhatvayoḥ	sandṛbdhatveṣu

Compound sandṛbdhatva -

Adverb -sandṛbdhatvam -sandṛbdhatvāt