Declension table of prayojana

Neuter	Singular	Dual	Plural
Nominative	prayojanam	prayojane	prayojanāni
Vocative	prayojana	prayojane	prayojanāni
Accusative	prayojanam	prayojane	prayojanāni
Instrumental	prayojanena	prayojanābhyām	prayojanaiḥ
Dative	prayojanāya	prayojanābhyām	prayojanebhyaḥ
Ablative	prayojanāt	prayojanābhyām	prayojanebhyaḥ
Genitive	prayojanasya	prayojanayoḥ	prayojanānām
Locative	prayojane	prayojanayoḥ	prayojaneṣu

Compound prayojana -

Adverb -prayojanam -prayojanāt