Declension table of saumanasya

Neuter	Singular	Dual	Plural
Nominative	saumanasyam	saumanasye	saumanasyāni
Vocative	saumanasya	saumanasye	saumanasyāni
Accusative	saumanasyam	saumanasye	saumanasyāni
Instrumental	saumanasyena	saumanasyābhyām	saumanasyaiḥ
Dative	saumanasyāya	saumanasyābhyām	saumanasyebhyaḥ
Ablative	saumanasyāt	saumanasyābhyām	saumanasyebhyaḥ
Genitive	saumanasyasya	saumanasyayoḥ	saumanasyānām
Locative	saumanasye	saumanasyayoḥ	saumanasyeṣu

Compound saumanasya -

Adverb -saumanasyam -saumanasyāt