Declension table of ?hayyamāna

Neuter	Singular	Dual	Plural
Nominative	hayyamānam	hayyamāne	hayyamānāni
Vocative	hayyamāna	hayyamāne	hayyamānāni
Accusative	hayyamānam	hayyamāne	hayyamānāni
Instrumental	hayyamānena	hayyamānābhyām	hayyamānaiḥ
Dative	hayyamānāya	hayyamānābhyām	hayyamānebhyaḥ
Ablative	hayyamānāt	hayyamānābhyām	hayyamānebhyaḥ
Genitive	hayyamānasya	hayyamānayoḥ	hayyamānānām
Locative	hayyamāne	hayyamānayoḥ	hayyamāneṣu

Compound hayyamāna -

Adverb -hayyamānam -hayyamānāt