Declension table of ?tvaṣṭṛdevatya

Masculine	Singular	Dual	Plural
Nominative	tvaṣṭṛdevatyaḥ	tvaṣṭṛdevatyau	tvaṣṭṛdevatyāḥ
Vocative	tvaṣṭṛdevatya	tvaṣṭṛdevatyau	tvaṣṭṛdevatyāḥ
Accusative	tvaṣṭṛdevatyam	tvaṣṭṛdevatyau	tvaṣṭṛdevatyān
Instrumental	tvaṣṭṛdevatyena	tvaṣṭṛdevatyābhyām	tvaṣṭṛdevatyaiḥ tvaṣṭṛdevatyebhiḥ
Dative	tvaṣṭṛdevatyāya	tvaṣṭṛdevatyābhyām	tvaṣṭṛdevatyebhyaḥ
Ablative	tvaṣṭṛdevatyāt	tvaṣṭṛdevatyābhyām	tvaṣṭṛdevatyebhyaḥ
Genitive	tvaṣṭṛdevatyasya	tvaṣṭṛdevatyayoḥ	tvaṣṭṛdevatyānām
Locative	tvaṣṭṛdevatye	tvaṣṭṛdevatyayoḥ	tvaṣṭṛdevatyeṣu

Compound tvaṣṭṛdevatya -

Adverb -tvaṣṭṛdevatyam -tvaṣṭṛdevatyāt