Declension table of ?prāgagra

Neuter	Singular	Dual	Plural
Nominative	prāgagram	prāgagre	prāgagrāṇi
Vocative	prāgagra	prāgagre	prāgagrāṇi
Accusative	prāgagram	prāgagre	prāgagrāṇi
Instrumental	prāgagreṇa	prāgagrābhyām	prāgagraiḥ
Dative	prāgagrāya	prāgagrābhyām	prāgagrebhyaḥ
Ablative	prāgagrāt	prāgagrābhyām	prāgagrebhyaḥ
Genitive	prāgagrasya	prāgagrayoḥ	prāgagrāṇām
Locative	prāgagre	prāgagrayoḥ	prāgagreṣu

Compound prāgagra -

Adverb -prāgagram -prāgagrāt