Declension table of ?hāpyamāna

Masculine	Singular	Dual	Plural
Nominative	hāpyamānaḥ	hāpyamānau	hāpyamānāḥ
Vocative	hāpyamāna	hāpyamānau	hāpyamānāḥ
Accusative	hāpyamānam	hāpyamānau	hāpyamānān
Instrumental	hāpyamānena	hāpyamānābhyām	hāpyamānaiḥ hāpyamānebhiḥ
Dative	hāpyamānāya	hāpyamānābhyām	hāpyamānebhyaḥ
Ablative	hāpyamānāt	hāpyamānābhyām	hāpyamānebhyaḥ
Genitive	hāpyamānasya	hāpyamānayoḥ	hāpyamānānām
Locative	hāpyamāne	hāpyamānayoḥ	hāpyamāneṣu

Compound hāpyamāna -

Adverb -hāpyamānam -hāpyamānāt