Declension table of ?siddhaprayojana

Masculine	Singular	Dual	Plural
Nominative	siddhaprayojanaḥ	siddhaprayojanau	siddhaprayojanāḥ
Vocative	siddhaprayojana	siddhaprayojanau	siddhaprayojanāḥ
Accusative	siddhaprayojanam	siddhaprayojanau	siddhaprayojanān
Instrumental	siddhaprayojanena	siddhaprayojanābhyām	siddhaprayojanaiḥ siddhaprayojanebhiḥ
Dative	siddhaprayojanāya	siddhaprayojanābhyām	siddhaprayojanebhyaḥ
Ablative	siddhaprayojanāt	siddhaprayojanābhyām	siddhaprayojanebhyaḥ
Genitive	siddhaprayojanasya	siddhaprayojanayoḥ	siddhaprayojanānām
Locative	siddhaprayojane	siddhaprayojanayoḥ	siddhaprayojaneṣu

Compound siddhaprayojana -

Adverb -siddhaprayojanam -siddhaprayojanāt