Declension table of ?pūrvaga

Neuter	Singular	Dual	Plural
Nominative	pūrvagam	pūrvage	pūrvagāṇi
Vocative	pūrvaga	pūrvage	pūrvagāṇi
Accusative	pūrvagam	pūrvage	pūrvagāṇi
Instrumental	pūrvageṇa	pūrvagābhyām	pūrvagaiḥ
Dative	pūrvagāya	pūrvagābhyām	pūrvagebhyaḥ
Ablative	pūrvagāt	pūrvagābhyām	pūrvagebhyaḥ
Genitive	pūrvagasya	pūrvagayoḥ	pūrvagāṇām
Locative	pūrvage	pūrvagayoḥ	pūrvageṣu

Compound pūrvaga -

Adverb -pūrvagam -pūrvagāt