Declension table of sundara

Masculine	Singular	Dual	Plural
Nominative	sundaraḥ	sundarau	sundarāḥ
Vocative	sundara	sundarau	sundarāḥ
Accusative	sundaram	sundarau	sundarān
Instrumental	sundareṇa	sundarābhyām	sundaraiḥ sundarebhiḥ
Dative	sundarāya	sundarābhyām	sundarebhyaḥ
Ablative	sundarāt	sundarābhyām	sundarebhyaḥ
Genitive	sundarasya	sundarayoḥ	sundarāṇām
Locative	sundare	sundarayoḥ	sundareṣu

Compound sundara -

Adverb -sundaram -sundarāt