Declension table of catuṣka

Masculine	Singular	Dual	Plural
Nominative	catuṣkaḥ	catuṣkau	catuṣkāḥ
Vocative	catuṣka	catuṣkau	catuṣkāḥ
Accusative	catuṣkam	catuṣkau	catuṣkān
Instrumental	catuṣkeṇa	catuṣkābhyām	catuṣkaiḥ catuṣkebhiḥ
Dative	catuṣkāya	catuṣkābhyām	catuṣkebhyaḥ
Ablative	catuṣkāt	catuṣkābhyām	catuṣkebhyaḥ
Genitive	catuṣkasya	catuṣkayoḥ	catuṣkāṇām
Locative	catuṣke	catuṣkayoḥ	catuṣkeṣu

Compound catuṣka -

Adverb -catuṣkam -catuṣkāt