Declension table of ?prāgagra

Masculine	Singular	Dual	Plural
Nominative	prāgagraḥ	prāgagrau	prāgagrāḥ
Vocative	prāgagra	prāgagrau	prāgagrāḥ
Accusative	prāgagram	prāgagrau	prāgagrān
Instrumental	prāgagreṇa	prāgagrābhyām	prāgagraiḥ prāgagrebhiḥ
Dative	prāgagrāya	prāgagrābhyām	prāgagrebhyaḥ
Ablative	prāgagrāt	prāgagrābhyām	prāgagrebhyaḥ
Genitive	prāgagrasya	prāgagrayoḥ	prāgagrāṇām
Locative	prāgagre	prāgagrayoḥ	prāgagreṣu

Compound prāgagra -

Adverb -prāgagram -prāgagrāt