Declension table of ?yaddvandva

Neuter	Singular	Dual	Plural
Nominative	yaddvandvam	yaddvandve	yaddvandvāni
Vocative	yaddvandva	yaddvandve	yaddvandvāni
Accusative	yaddvandvam	yaddvandve	yaddvandvāni
Instrumental	yaddvandvena	yaddvandvābhyām	yaddvandvaiḥ
Dative	yaddvandvāya	yaddvandvābhyām	yaddvandvebhyaḥ
Ablative	yaddvandvāt	yaddvandvābhyām	yaddvandvebhyaḥ
Genitive	yaddvandvasya	yaddvandvayoḥ	yaddvandvānām
Locative	yaddvandve	yaddvandvayoḥ	yaddvandveṣu

Compound yaddvandva -

Adverb -yaddvandvam -yaddvandvāt