Declension table of ?ṣṭyūma

Masculine	Singular	Dual	Plural
Nominative	ṣṭyūmaḥ	ṣṭyūmau	ṣṭyūmāḥ
Vocative	ṣṭyūma	ṣṭyūmau	ṣṭyūmāḥ
Accusative	ṣṭyūmam	ṣṭyūmau	ṣṭyūmān
Instrumental	ṣṭyūmena	ṣṭyūmābhyām	ṣṭyūmaiḥ ṣṭyūmebhiḥ
Dative	ṣṭyūmāya	ṣṭyūmābhyām	ṣṭyūmebhyaḥ
Ablative	ṣṭyūmāt	ṣṭyūmābhyām	ṣṭyūmebhyaḥ
Genitive	ṣṭyūmasya	ṣṭyūmayoḥ	ṣṭyūmānām
Locative	ṣṭyūme	ṣṭyūmayoḥ	ṣṭyūmeṣu

Compound ṣṭyūma -

Adverb -ṣṭyūmam -ṣṭyūmāt