Declension table of ?upasadya

Neuter	Singular	Dual	Plural
Nominative	upasadyam	upasadye	upasadyāni
Vocative	upasadya	upasadye	upasadyāni
Accusative	upasadyam	upasadye	upasadyāni
Instrumental	upasadyena	upasadyābhyām	upasadyaiḥ
Dative	upasadyāya	upasadyābhyām	upasadyebhyaḥ
Ablative	upasadyāt	upasadyābhyām	upasadyebhyaḥ
Genitive	upasadyasya	upasadyayoḥ	upasadyānām
Locative	upasadye	upasadyayoḥ	upasadyeṣu

Compound upasadya -

Adverb -upasadyam -upasadyāt