Declension table of ?prasyamāna

Neuter	Singular	Dual	Plural
Nominative	prasyamānam	prasyamāne	prasyamānāni
Vocative	prasyamāna	prasyamāne	prasyamānāni
Accusative	prasyamānam	prasyamāne	prasyamānāni
Instrumental	prasyamānena	prasyamānābhyām	prasyamānaiḥ
Dative	prasyamānāya	prasyamānābhyām	prasyamānebhyaḥ
Ablative	prasyamānāt	prasyamānābhyām	prasyamānebhyaḥ
Genitive	prasyamānasya	prasyamānayoḥ	prasyamānānām
Locative	prasyamāne	prasyamānayoḥ	prasyamāneṣu

Compound prasyamāna -

Adverb -prasyamānam -prasyamānāt