Declension table of ?śiśivas

Neuter	Singular	Dual	Plural
Nominative	śiśivat	śiśuṣī	śiśivāṃsi
Vocative	śiśivat	śiśuṣī	śiśivāṃsi
Accusative	śiśivat	śiśuṣī	śiśivāṃsi
Instrumental	śiśuṣā	śiśivadbhyām	śiśivadbhiḥ
Dative	śiśuṣe	śiśivadbhyām	śiśivadbhyaḥ
Ablative	śiśuṣaḥ	śiśivadbhyām	śiśivadbhyaḥ
Genitive	śiśuṣaḥ	śiśuṣoḥ	śiśuṣām
Locative	śiśuṣi	śiśuṣoḥ	śiśivatsu

Compound śiśivat -

Adverb -śiśivas