Declension table of sundara

Neuter	Singular	Dual	Plural
Nominative	sundaram	sundare	sundarāṇi
Vocative	sundara	sundare	sundarāṇi
Accusative	sundaram	sundare	sundarāṇi
Instrumental	sundareṇa	sundarābhyām	sundaraiḥ
Dative	sundarāya	sundarābhyām	sundarebhyaḥ
Ablative	sundarāt	sundarābhyām	sundarebhyaḥ
Genitive	sundarasya	sundarayoḥ	sundarāṇām
Locative	sundare	sundarayoḥ	sundareṣu

Compound sundara -

Adverb -sundaram -sundarāt