Declension table of ?sevitavya

Masculine	Singular	Dual	Plural
Nominative	sevitavyaḥ	sevitavyau	sevitavyāḥ
Vocative	sevitavya	sevitavyau	sevitavyāḥ
Accusative	sevitavyam	sevitavyau	sevitavyān
Instrumental	sevitavyena	sevitavyābhyām	sevitavyaiḥ sevitavyebhiḥ
Dative	sevitavyāya	sevitavyābhyām	sevitavyebhyaḥ
Ablative	sevitavyāt	sevitavyābhyām	sevitavyebhyaḥ
Genitive	sevitavyasya	sevitavyayoḥ	sevitavyānām
Locative	sevitavye	sevitavyayoḥ	sevitavyeṣu

Compound sevitavya -

Adverb -sevitavyam -sevitavyāt