Declension table of ?ruca

Masculine	Singular	Dual	Plural
Nominative	rucaḥ	rucau	rucāḥ
Vocative	ruca	rucau	rucāḥ
Accusative	rucam	rucau	rucān
Instrumental	rucena	rucābhyām	rucaiḥ rucebhiḥ
Dative	rucāya	rucābhyām	rucebhyaḥ
Ablative	rucāt	rucābhyām	rucebhyaḥ
Genitive	rucasya	rucayoḥ	rucānām
Locative	ruce	rucayoḥ	ruceṣu

Compound ruca -

Adverb -rucam -rucāt