Declension table of ?śiśinvas

Masculine	Singular	Dual	Plural
Nominative	śiśinvān	śiśinvāṃsau	śiśinvāṃsaḥ
Vocative	śiśinvan	śiśinvāṃsau	śiśinvāṃsaḥ
Accusative	śiśinvāṃsam	śiśinvāṃsau	śiśinuṣaḥ
Instrumental	śiśinuṣā	śiśinvadbhyām	śiśinvadbhiḥ
Dative	śiśinuṣe	śiśinvadbhyām	śiśinvadbhyaḥ
Ablative	śiśinuṣaḥ	śiśinvadbhyām	śiśinvadbhyaḥ
Genitive	śiśinuṣaḥ	śiśinuṣoḥ	śiśinuṣām
Locative	śiśinuṣi	śiśinuṣoḥ	śiśinvatsu

Compound śiśinvat -

Adverb -śiśinvas