Declension table of ?parirathya

Neuter	Singular	Dual	Plural
Nominative	parirathyam	parirathye	parirathyāni
Vocative	parirathya	parirathye	parirathyāni
Accusative	parirathyam	parirathye	parirathyāni
Instrumental	parirathyena	parirathyābhyām	parirathyaiḥ
Dative	parirathyāya	parirathyābhyām	parirathyebhyaḥ
Ablative	parirathyāt	parirathyābhyām	parirathyebhyaḥ
Genitive	parirathyasya	parirathyayoḥ	parirathyānām
Locative	parirathye	parirathyayoḥ	parirathyeṣu

Compound parirathya -

Adverb -parirathyam -parirathyāt