Declension table of ?ruruśīrṣan

Masculine	Singular	Dual	Plural
Nominative	ruruśīrṣā	ruruśīrṣāṇau	ruruśīrṣāṇaḥ
Vocative	ruruśīrṣan	ruruśīrṣāṇau	ruruśīrṣāṇaḥ
Accusative	ruruśīrṣāṇam	ruruśīrṣāṇau	ruruśīrṣṇaḥ
Instrumental	ruruśīrṣṇā	ruruśīrṣabhyām	ruruśīrṣabhiḥ
Dative	ruruśīrṣṇe	ruruśīrṣabhyām	ruruśīrṣabhyaḥ
Ablative	ruruśīrṣṇaḥ	ruruśīrṣabhyām	ruruśīrṣabhyaḥ
Genitive	ruruśīrṣṇaḥ	ruruśīrṣṇoḥ	ruruśīrṣṇām
Locative	ruruśīrṣṇi ruruśīrṣaṇi	ruruśīrṣṇoḥ	ruruśīrṣasu

Compound ruruśīrṣa -

Adverb -ruruśīrṣam