Declension table of ?yiyāsya

Neuter	Singular	Dual	Plural
Nominative	yiyāsyam	yiyāsye	yiyāsyāni
Vocative	yiyāsya	yiyāsye	yiyāsyāni
Accusative	yiyāsyam	yiyāsye	yiyāsyāni
Instrumental	yiyāsyena	yiyāsyābhyām	yiyāsyaiḥ
Dative	yiyāsyāya	yiyāsyābhyām	yiyāsyebhyaḥ
Ablative	yiyāsyāt	yiyāsyābhyām	yiyāsyebhyaḥ
Genitive	yiyāsyasya	yiyāsyayoḥ	yiyāsyānām
Locative	yiyāsye	yiyāsyayoḥ	yiyāsyeṣu

Compound yiyāsya -

Adverb -yiyāsyam -yiyāsyāt