Declension table of ?hāyaka

Neuter	Singular	Dual	Plural
Nominative	hāyakam	hāyake	hāyakāni
Vocative	hāyaka	hāyake	hāyakāni
Accusative	hāyakam	hāyake	hāyakāni
Instrumental	hāyakena	hāyakābhyām	hāyakaiḥ
Dative	hāyakāya	hāyakābhyām	hāyakebhyaḥ
Ablative	hāyakāt	hāyakābhyām	hāyakebhyaḥ
Genitive	hāyakasya	hāyakayoḥ	hāyakānām
Locative	hāyake	hāyakayoḥ	hāyakeṣu

Compound hāyaka -

Adverb -hāyakam -hāyakāt