Declension table of ?tantrayitavya

Neuter	Singular	Dual	Plural
Nominative	tantrayitavyam	tantrayitavye	tantrayitavyāni
Vocative	tantrayitavya	tantrayitavye	tantrayitavyāni
Accusative	tantrayitavyam	tantrayitavye	tantrayitavyāni
Instrumental	tantrayitavyena	tantrayitavyābhyām	tantrayitavyaiḥ
Dative	tantrayitavyāya	tantrayitavyābhyām	tantrayitavyebhyaḥ
Ablative	tantrayitavyāt	tantrayitavyābhyām	tantrayitavyebhyaḥ
Genitive	tantrayitavyasya	tantrayitavyayoḥ	tantrayitavyānām
Locative	tantrayitavye	tantrayitavyayoḥ	tantrayitavyeṣu

Compound tantrayitavya -

Adverb -tantrayitavyam -tantrayitavyāt