Declension table of ?hayamāna

Neuter	Singular	Dual	Plural
Nominative	hayamānam	hayamāne	hayamānāni
Vocative	hayamāna	hayamāne	hayamānāni
Accusative	hayamānam	hayamāne	hayamānāni
Instrumental	hayamānena	hayamānābhyām	hayamānaiḥ
Dative	hayamānāya	hayamānābhyām	hayamānebhyaḥ
Ablative	hayamānāt	hayamānābhyām	hayamānebhyaḥ
Genitive	hayamānasya	hayamānayoḥ	hayamānānām
Locative	hayamāne	hayamānayoḥ	hayamāneṣu

Compound hayamāna -

Adverb -hayamānam -hayamānāt