Declension table of ?paktavya

Masculine	Singular	Dual	Plural
Nominative	paktavyaḥ	paktavyau	paktavyāḥ
Vocative	paktavya	paktavyau	paktavyāḥ
Accusative	paktavyam	paktavyau	paktavyān
Instrumental	paktavyena	paktavyābhyām	paktavyaiḥ paktavyebhiḥ
Dative	paktavyāya	paktavyābhyām	paktavyebhyaḥ
Ablative	paktavyāt	paktavyābhyām	paktavyebhyaḥ
Genitive	paktavyasya	paktavyayoḥ	paktavyānām
Locative	paktavye	paktavyayoḥ	paktavyeṣu

Compound paktavya -

Adverb -paktavyam -paktavyāt