Declension table of ?samuddhvasta

Neuter	Singular	Dual	Plural
Nominative	samuddhvastam	samuddhvaste	samuddhvastāni
Vocative	samuddhvasta	samuddhvaste	samuddhvastāni
Accusative	samuddhvastam	samuddhvaste	samuddhvastāni
Instrumental	samuddhvastena	samuddhvastābhyām	samuddhvastaiḥ
Dative	samuddhvastāya	samuddhvastābhyām	samuddhvastebhyaḥ
Ablative	samuddhvastāt	samuddhvastābhyām	samuddhvastebhyaḥ
Genitive	samuddhvastasya	samuddhvastayoḥ	samuddhvastānām
Locative	samuddhvaste	samuddhvastayoḥ	samuddhvasteṣu

Compound samuddhvasta -

Adverb -samuddhvastam -samuddhvastāt