Declension table of ?samupagantavya

Masculine	Singular	Dual	Plural
Nominative	samupagantavyaḥ	samupagantavyau	samupagantavyāḥ
Vocative	samupagantavya	samupagantavyau	samupagantavyāḥ
Accusative	samupagantavyam	samupagantavyau	samupagantavyān
Instrumental	samupagantavyena	samupagantavyābhyām	samupagantavyaiḥ samupagantavyebhiḥ
Dative	samupagantavyāya	samupagantavyābhyām	samupagantavyebhyaḥ
Ablative	samupagantavyāt	samupagantavyābhyām	samupagantavyebhyaḥ
Genitive	samupagantavyasya	samupagantavyayoḥ	samupagantavyānām
Locative	samupagantavye	samupagantavyayoḥ	samupagantavyeṣu

Compound samupagantavya -

Adverb -samupagantavyam -samupagantavyāt