Declension table of ?saṅktavya

Masculine	Singular	Dual	Plural
Nominative	saṅktavyaḥ	saṅktavyau	saṅktavyāḥ
Vocative	saṅktavya	saṅktavyau	saṅktavyāḥ
Accusative	saṅktavyam	saṅktavyau	saṅktavyān
Instrumental	saṅktavyena	saṅktavyābhyām	saṅktavyaiḥ saṅktavyebhiḥ
Dative	saṅktavyāya	saṅktavyābhyām	saṅktavyebhyaḥ
Ablative	saṅktavyāt	saṅktavyābhyām	saṅktavyebhyaḥ
Genitive	saṅktavyasya	saṅktavyayoḥ	saṅktavyānām
Locative	saṅktavye	saṅktavyayoḥ	saṅktavyeṣu

Compound saṅktavya -

Adverb -saṅktavyam -saṅktavyāt