Declension table of ?avasthātavya

Neuter	Singular	Dual	Plural
Nominative	avasthātavyam	avasthātavye	avasthātavyāni
Vocative	avasthātavya	avasthātavye	avasthātavyāni
Accusative	avasthātavyam	avasthātavye	avasthātavyāni
Instrumental	avasthātavyena	avasthātavyābhyām	avasthātavyaiḥ
Dative	avasthātavyāya	avasthātavyābhyām	avasthātavyebhyaḥ
Ablative	avasthātavyāt	avasthātavyābhyām	avasthātavyebhyaḥ
Genitive	avasthātavyasya	avasthātavyayoḥ	avasthātavyānām
Locative	avasthātavye	avasthātavyayoḥ	avasthātavyeṣu

Compound avasthātavya -

Adverb -avasthātavyam -avasthātavyāt