Declension table of ?somasundara

Masculine	Singular	Dual	Plural
Nominative	somasundaraḥ	somasundarau	somasundarāḥ
Vocative	somasundara	somasundarau	somasundarāḥ
Accusative	somasundaram	somasundarau	somasundarān
Instrumental	somasundareṇa	somasundarābhyām	somasundaraiḥ somasundarebhiḥ
Dative	somasundarāya	somasundarābhyām	somasundarebhyaḥ
Ablative	somasundarāt	somasundarābhyām	somasundarebhyaḥ
Genitive	somasundarasya	somasundarayoḥ	somasundarāṇām
Locative	somasundare	somasundarayoḥ	somasundareṣu

Compound somasundara -

Adverb -somasundaram -somasundarāt