Declension table of siddhapada

Neuter	Singular	Dual	Plural
Nominative	siddhapadam	siddhapade	siddhapadāni
Vocative	siddhapada	siddhapade	siddhapadāni
Accusative	siddhapadam	siddhapade	siddhapadāni
Instrumental	siddhapadena	siddhapadābhyām	siddhapadaiḥ
Dative	siddhapadāya	siddhapadābhyām	siddhapadebhyaḥ
Ablative	siddhapadāt	siddhapadābhyām	siddhapadebhyaḥ
Genitive	siddhapadasya	siddhapadayoḥ	siddhapadānām
Locative	siddhapade	siddhapadayoḥ	siddhapadeṣu

Compound siddhapada -

Adverb -siddhapadam -siddhapadāt