Declension table of ?karṇayitavya

Masculine	Singular	Dual	Plural
Nominative	karṇayitavyaḥ	karṇayitavyau	karṇayitavyāḥ
Vocative	karṇayitavya	karṇayitavyau	karṇayitavyāḥ
Accusative	karṇayitavyam	karṇayitavyau	karṇayitavyān
Instrumental	karṇayitavyena	karṇayitavyābhyām	karṇayitavyaiḥ karṇayitavyebhiḥ
Dative	karṇayitavyāya	karṇayitavyābhyām	karṇayitavyebhyaḥ
Ablative	karṇayitavyāt	karṇayitavyābhyām	karṇayitavyebhyaḥ
Genitive	karṇayitavyasya	karṇayitavyayoḥ	karṇayitavyānām
Locative	karṇayitavye	karṇayitavyayoḥ	karṇayitavyeṣu

Compound karṇayitavya -

Adverb -karṇayitavyam -karṇayitavyāt