Declension table of ?hāsyāspadatva

Neuter	Singular	Dual	Plural
Nominative	hāsyāspadatvam	hāsyāspadatve	hāsyāspadatvāni
Vocative	hāsyāspadatva	hāsyāspadatve	hāsyāspadatvāni
Accusative	hāsyāspadatvam	hāsyāspadatve	hāsyāspadatvāni
Instrumental	hāsyāspadatvena	hāsyāspadatvābhyām	hāsyāspadatvaiḥ
Dative	hāsyāspadatvāya	hāsyāspadatvābhyām	hāsyāspadatvebhyaḥ
Ablative	hāsyāspadatvāt	hāsyāspadatvābhyām	hāsyāspadatvebhyaḥ
Genitive	hāsyāspadatvasya	hāsyāspadatvayoḥ	hāsyāspadatvānām
Locative	hāsyāspadatve	hāsyāspadatvayoḥ	hāsyāspadatveṣu

Compound hāsyāspadatva -

Adverb -hāsyāspadatvam -hāsyāspadatvāt