Declension table of ?siddhavana

Neuter	Singular	Dual	Plural
Nominative	siddhavanam	siddhavane	siddhavanāni
Vocative	siddhavana	siddhavane	siddhavanāni
Accusative	siddhavanam	siddhavane	siddhavanāni
Instrumental	siddhavanena	siddhavanābhyām	siddhavanaiḥ
Dative	siddhavanāya	siddhavanābhyām	siddhavanebhyaḥ
Ablative	siddhavanāt	siddhavanābhyām	siddhavanebhyaḥ
Genitive	siddhavanasya	siddhavanayoḥ	siddhavanānām
Locative	siddhavane	siddhavanayoḥ	siddhavaneṣu

Compound siddhavana -

Adverb -siddhavanam -siddhavanāt