Declension table of parastha

Neuter	Singular	Dual	Plural
Nominative	parastham	parasthe	parasthāni
Vocative	parastha	parasthe	parasthāni
Accusative	parastham	parasthe	parasthāni
Instrumental	parasthena	parasthābhyām	parasthaiḥ
Dative	parasthāya	parasthābhyām	parasthebhyaḥ
Ablative	parasthāt	parasthābhyām	parasthebhyaḥ
Genitive	parasthasya	parasthayoḥ	parasthānām
Locative	parasthe	parasthayoḥ	parastheṣu

Compound parastha -

Adverb -parastham -parasthāt