Declension table of ?tvāṣṭī

Feminine	Singular	Dual	Plural
Nominative	tvāṣṭī	tvāṣṭyau	tvāṣṭyaḥ
Vocative	tvāṣṭi	tvāṣṭyau	tvāṣṭyaḥ
Accusative	tvāṣṭīm	tvāṣṭyau	tvāṣṭīḥ
Instrumental	tvāṣṭyā	tvāṣṭībhyām	tvāṣṭībhiḥ
Dative	tvāṣṭyai	tvāṣṭībhyām	tvāṣṭībhyaḥ
Ablative	tvāṣṭyāḥ	tvāṣṭībhyām	tvāṣṭībhyaḥ
Genitive	tvāṣṭyāḥ	tvāṣṭyoḥ	tvāṣṭīnām
Locative	tvāṣṭyām	tvāṣṭyoḥ	tvāṣṭīṣu

Compound tvāṣṭi - tvāṣṭī -

Adverb -tvāṣṭi