Declension table of ?smāyayitavya

Neuter	Singular	Dual	Plural
Nominative	smāyayitavyam	smāyayitavye	smāyayitavyāni
Vocative	smāyayitavya	smāyayitavye	smāyayitavyāni
Accusative	smāyayitavyam	smāyayitavye	smāyayitavyāni
Instrumental	smāyayitavyena	smāyayitavyābhyām	smāyayitavyaiḥ
Dative	smāyayitavyāya	smāyayitavyābhyām	smāyayitavyebhyaḥ
Ablative	smāyayitavyāt	smāyayitavyābhyām	smāyayitavyebhyaḥ
Genitive	smāyayitavyasya	smāyayitavyayoḥ	smāyayitavyānām
Locative	smāyayitavye	smāyayitavyayoḥ	smāyayitavyeṣu

Compound smāyayitavya -

Adverb -smāyayitavyam -smāyayitavyāt