Declension table of ?ṣaṣṭhīvrata

Neuter	Singular	Dual	Plural
Nominative	ṣaṣṭhīvratam	ṣaṣṭhīvrate	ṣaṣṭhīvratāni
Vocative	ṣaṣṭhīvrata	ṣaṣṭhīvrate	ṣaṣṭhīvratāni
Accusative	ṣaṣṭhīvratam	ṣaṣṭhīvrate	ṣaṣṭhīvratāni
Instrumental	ṣaṣṭhīvratena	ṣaṣṭhīvratābhyām	ṣaṣṭhīvrataiḥ
Dative	ṣaṣṭhīvratāya	ṣaṣṭhīvratābhyām	ṣaṣṭhīvratebhyaḥ
Ablative	ṣaṣṭhīvratāt	ṣaṣṭhīvratābhyām	ṣaṣṭhīvratebhyaḥ
Genitive	ṣaṣṭhīvratasya	ṣaṣṭhīvratayoḥ	ṣaṣṭhīvratānām
Locative	ṣaṣṭhīvrate	ṣaṣṭhīvratayoḥ	ṣaṣṭhīvrateṣu

Compound ṣaṣṭhīvrata -

Adverb -ṣaṣṭhīvratam -ṣaṣṭhīvratāt