Declension table of ?tatvakṣvas

Masculine	Singular	Dual	Plural
Nominative	tatvakṣvān	tatvakṣvāṃsau	tatvakṣvāṃsaḥ
Vocative	tatvakṣvan	tatvakṣvāṃsau	tatvakṣvāṃsaḥ
Accusative	tatvakṣvāṃsam	tatvakṣvāṃsau	tatvakṣuṣaḥ
Instrumental	tatvakṣuṣā	tatvakṣvadbhyām	tatvakṣvadbhiḥ
Dative	tatvakṣuṣe	tatvakṣvadbhyām	tatvakṣvadbhyaḥ
Ablative	tatvakṣuṣaḥ	tatvakṣvadbhyām	tatvakṣvadbhyaḥ
Genitive	tatvakṣuṣaḥ	tatvakṣuṣoḥ	tatvakṣuṣām
Locative	tatvakṣuṣi	tatvakṣuṣoḥ	tatvakṣvatsu

Compound tatvakṣvat -

Adverb -tatvakṣvas