Declension table of ?kupata

Neuter	Singular	Dual	Plural
Nominative	kupatam	kupate	kupatāni
Vocative	kupata	kupate	kupatāni
Accusative	kupatam	kupate	kupatāni
Instrumental	kupatena	kupatābhyām	kupataiḥ
Dative	kupatāya	kupatābhyām	kupatebhyaḥ
Ablative	kupatāt	kupatābhyām	kupatebhyaḥ
Genitive	kupatasya	kupatayoḥ	kupatānām
Locative	kupate	kupatayoḥ	kupateṣu

Compound kupata -

Adverb -kupatam -kupatāt