Declension table of catuṣka

Neuter	Singular	Dual	Plural
Nominative	catuṣkam	catuṣke	catuṣkāṇi
Vocative	catuṣka	catuṣke	catuṣkāṇi
Accusative	catuṣkam	catuṣke	catuṣkāṇi
Instrumental	catuṣkeṇa	catuṣkābhyām	catuṣkaiḥ
Dative	catuṣkāya	catuṣkābhyām	catuṣkebhyaḥ
Ablative	catuṣkāt	catuṣkābhyām	catuṣkebhyaḥ
Genitive	catuṣkasya	catuṣkayoḥ	catuṣkāṇām
Locative	catuṣke	catuṣkayoḥ	catuṣkeṣu

Compound catuṣka -

Adverb -catuṣkam -catuṣkāt