Declension table of ?sevitavya

Neuter	Singular	Dual	Plural
Nominative	sevitavyam	sevitavye	sevitavyāni
Vocative	sevitavya	sevitavye	sevitavyāni
Accusative	sevitavyam	sevitavye	sevitavyāni
Instrumental	sevitavyena	sevitavyābhyām	sevitavyaiḥ
Dative	sevitavyāya	sevitavyābhyām	sevitavyebhyaḥ
Ablative	sevitavyāt	sevitavyābhyām	sevitavyebhyaḥ
Genitive	sevitavyasya	sevitavyayoḥ	sevitavyānām
Locative	sevitavye	sevitavyayoḥ	sevitavyeṣu

Compound sevitavya -

Adverb -sevitavyam -sevitavyāt