Declension table of ?rathāgra

Neuter	Singular	Dual	Plural
Nominative	rathāgram	rathāgre	rathāgrāṇi
Vocative	rathāgra	rathāgre	rathāgrāṇi
Accusative	rathāgram	rathāgre	rathāgrāṇi
Instrumental	rathāgreṇa	rathāgrābhyām	rathāgraiḥ
Dative	rathāgrāya	rathāgrābhyām	rathāgrebhyaḥ
Ablative	rathāgrāt	rathāgrābhyām	rathāgrebhyaḥ
Genitive	rathāgrasya	rathāgrayoḥ	rathāgrāṇām
Locative	rathāgre	rathāgrayoḥ	rathāgreṣu

Compound rathāgra -

Adverb -rathāgram -rathāgrāt