Declension table of ?sādhayitavya

Masculine	Singular	Dual	Plural
Nominative	sādhayitavyaḥ	sādhayitavyau	sādhayitavyāḥ
Vocative	sādhayitavya	sādhayitavyau	sādhayitavyāḥ
Accusative	sādhayitavyam	sādhayitavyau	sādhayitavyān
Instrumental	sādhayitavyena	sādhayitavyābhyām	sādhayitavyaiḥ sādhayitavyebhiḥ
Dative	sādhayitavyāya	sādhayitavyābhyām	sādhayitavyebhyaḥ
Ablative	sādhayitavyāt	sādhayitavyābhyām	sādhayitavyebhyaḥ
Genitive	sādhayitavyasya	sādhayitavyayoḥ	sādhayitavyānām
Locative	sādhayitavye	sādhayitavyayoḥ	sādhayitavyeṣu

Compound sādhayitavya -

Adverb -sādhayitavyam -sādhayitavyāt