Declension table of ?ṣaṣṭitantra

Neuter	Singular	Dual	Plural
Nominative	ṣaṣṭitantram	ṣaṣṭitantre	ṣaṣṭitantrāṇi
Vocative	ṣaṣṭitantra	ṣaṣṭitantre	ṣaṣṭitantrāṇi
Accusative	ṣaṣṭitantram	ṣaṣṭitantre	ṣaṣṭitantrāṇi
Instrumental	ṣaṣṭitantreṇa	ṣaṣṭitantrābhyām	ṣaṣṭitantraiḥ
Dative	ṣaṣṭitantrāya	ṣaṣṭitantrābhyām	ṣaṣṭitantrebhyaḥ
Ablative	ṣaṣṭitantrāt	ṣaṣṭitantrābhyām	ṣaṣṭitantrebhyaḥ
Genitive	ṣaṣṭitantrasya	ṣaṣṭitantrayoḥ	ṣaṣṭitantrāṇām
Locative	ṣaṣṭitantre	ṣaṣṭitantrayoḥ	ṣaṣṭitantreṣu

Compound ṣaṣṭitantra -

Adverb -ṣaṣṭitantram -ṣaṣṭitantrāt