Declension table of ?śiśiśvayiṣvas

Masculine	Singular	Dual	Plural
Nominative	śiśiśvayiṣvān	śiśiśvayiṣvāṃsau	śiśiśvayiṣvāṃsaḥ
Vocative	śiśiśvayiṣvan	śiśiśvayiṣvāṃsau	śiśiśvayiṣvāṃsaḥ
Accusative	śiśiśvayiṣvāṃsam	śiśiśvayiṣvāṃsau	śiśiśvayiṣuṣaḥ
Instrumental	śiśiśvayiṣuṣā	śiśiśvayiṣvadbhyām	śiśiśvayiṣvadbhiḥ
Dative	śiśiśvayiṣuṣe	śiśiśvayiṣvadbhyām	śiśiśvayiṣvadbhyaḥ
Ablative	śiśiśvayiṣuṣaḥ	śiśiśvayiṣvadbhyām	śiśiśvayiṣvadbhyaḥ
Genitive	śiśiśvayiṣuṣaḥ	śiśiśvayiṣuṣoḥ	śiśiśvayiṣuṣām
Locative	śiśiśvayiṣuṣi	śiśiśvayiṣuṣoḥ	śiśiśvayiṣvatsu

Compound śiśiśvayiṣvat -

Adverb -śiśiśvayiṣvas