Declension table of ?pūrvya

Neuter	Singular	Dual	Plural
Nominative	pūrvyam	pūrvye	pūrvyāṇi
Vocative	pūrvya	pūrvye	pūrvyāṇi
Accusative	pūrvyam	pūrvye	pūrvyāṇi
Instrumental	pūrvyeṇa	pūrvyābhyām	pūrvyaiḥ
Dative	pūrvyāya	pūrvyābhyām	pūrvyebhyaḥ
Ablative	pūrvyāt	pūrvyābhyām	pūrvyebhyaḥ
Genitive	pūrvyasya	pūrvyayoḥ	pūrvyāṇām
Locative	pūrvye	pūrvyayoḥ	pūrvyeṣu

Compound pūrvya -

Adverb -pūrvyam -pūrvyāt