Declension table of ?śaśvasvas

Masculine	Singular	Dual	Plural
Nominative	śaśvasvān	śaśvasvāṃsau	śaśvasvāṃsaḥ
Vocative	śaśvasvan	śaśvasvāṃsau	śaśvasvāṃsaḥ
Accusative	śaśvasvāṃsam	śaśvasvāṃsau	śaśvasuṣaḥ
Instrumental	śaśvasuṣā	śaśvasvadbhyām	śaśvasvadbhiḥ
Dative	śaśvasuṣe	śaśvasvadbhyām	śaśvasvadbhyaḥ
Ablative	śaśvasuṣaḥ	śaśvasvadbhyām	śaśvasvadbhyaḥ
Genitive	śaśvasuṣaḥ	śaśvasuṣoḥ	śaśvasuṣām
Locative	śaśvasuṣi	śaśvasuṣoḥ	śaśvasvatsu

Compound śaśvasvat -

Adverb -śaśvasvas