Declension table of ?gamayitavya

Neuter	Singular	Dual	Plural
Nominative	gamayitavyam	gamayitavye	gamayitavyāni
Vocative	gamayitavya	gamayitavye	gamayitavyāni
Accusative	gamayitavyam	gamayitavye	gamayitavyāni
Instrumental	gamayitavyena	gamayitavyābhyām	gamayitavyaiḥ
Dative	gamayitavyāya	gamayitavyābhyām	gamayitavyebhyaḥ
Ablative	gamayitavyāt	gamayitavyābhyām	gamayitavyebhyaḥ
Genitive	gamayitavyasya	gamayitavyayoḥ	gamayitavyānām
Locative	gamayitavye	gamayitavyayoḥ	gamayitavyeṣu

Compound gamayitavya -

Adverb -gamayitavyam -gamayitavyāt