Declension table of prayojaka

Neuter	Singular	Dual	Plural
Nominative	prayojakam	prayojake	prayojakāni
Vocative	prayojaka	prayojake	prayojakāni
Accusative	prayojakam	prayojake	prayojakāni
Instrumental	prayojakena	prayojakābhyām	prayojakaiḥ
Dative	prayojakāya	prayojakābhyām	prayojakebhyaḥ
Ablative	prayojakāt	prayojakābhyām	prayojakebhyaḥ
Genitive	prayojakasya	prayojakayoḥ	prayojakānām
Locative	prayojake	prayojakayoḥ	prayojakeṣu

Compound prayojaka -

Adverb -prayojakam -prayojakāt