Declension table of ?tastabhvas

Neuter	Singular	Dual	Plural
Nominative	tastabhvat	tastabhuṣī	tastabhvāṃsi
Vocative	tastabhvat	tastabhuṣī	tastabhvāṃsi
Accusative	tastabhvat	tastabhuṣī	tastabhvāṃsi
Instrumental	tastabhuṣā	tastabhvadbhyām	tastabhvadbhiḥ
Dative	tastabhuṣe	tastabhvadbhyām	tastabhvadbhyaḥ
Ablative	tastabhuṣaḥ	tastabhvadbhyām	tastabhvadbhyaḥ
Genitive	tastabhuṣaḥ	tastabhuṣoḥ	tastabhuṣām
Locative	tastabhuṣi	tastabhuṣoḥ	tastabhvatsu

Compound tastabhvat -

Adverb -tastabhvat