Declension table of hāsyatva

Neuter	Singular	Dual	Plural
Nominative	hāsyatvam	hāsyatve	hāsyatvāni
Vocative	hāsyatva	hāsyatve	hāsyatvāni
Accusative	hāsyatvam	hāsyatve	hāsyatvāni
Instrumental	hāsyatvena	hāsyatvābhyām	hāsyatvaiḥ
Dative	hāsyatvāya	hāsyatvābhyām	hāsyatvebhyaḥ
Ablative	hāsyatvāt	hāsyatvābhyām	hāsyatvebhyaḥ
Genitive	hāsyatvasya	hāsyatvayoḥ	hāsyatvānām
Locative	hāsyatve	hāsyatvayoḥ	hāsyatveṣu

Compound hāsyatva -

Adverb -hāsyatvam -hāsyatvāt