Declension table of ?susantrasta

Neuter	Singular	Dual	Plural
Nominative	susantrastam	susantraste	susantrastāni
Vocative	susantrasta	susantraste	susantrastāni
Accusative	susantrastam	susantraste	susantrastāni
Instrumental	susantrastena	susantrastābhyām	susantrastaiḥ
Dative	susantrastāya	susantrastābhyām	susantrastebhyaḥ
Ablative	susantrastāt	susantrastābhyām	susantrastebhyaḥ
Genitive	susantrastasya	susantrastayoḥ	susantrastānām
Locative	susantraste	susantrastayoḥ	susantrasteṣu

Compound susantrasta -

Adverb -susantrastam -susantrastāt