Declension table of ?prayāṇaka

Neuter	Singular	Dual	Plural
Nominative	prayāṇakam	prayāṇake	prayāṇakāni
Vocative	prayāṇaka	prayāṇake	prayāṇakāni
Accusative	prayāṇakam	prayāṇake	prayāṇakāni
Instrumental	prayāṇakena	prayāṇakābhyām	prayāṇakaiḥ
Dative	prayāṇakāya	prayāṇakābhyām	prayāṇakebhyaḥ
Ablative	prayāṇakāt	prayāṇakābhyām	prayāṇakebhyaḥ
Genitive	prayāṇakasya	prayāṇakayoḥ	prayāṇakānām
Locative	prayāṇake	prayāṇakayoḥ	prayāṇakeṣu

Compound prayāṇaka -

Adverb -prayāṇakam -prayāṇakāt