Declension table of chattra

Neuter	Singular	Dual	Plural
Nominative	chattram	chattre	chattrāṇi
Vocative	chattra	chattre	chattrāṇi
Accusative	chattram	chattre	chattrāṇi
Instrumental	chattreṇa	chattrābhyām	chattraiḥ
Dative	chattrāya	chattrābhyām	chattrebhyaḥ
Ablative	chattrāt	chattrābhyām	chattrebhyaḥ
Genitive	chattrasya	chattrayoḥ	chattrāṇām
Locative	chattre	chattrayoḥ	chattreṣu

Compound chattra -

Adverb -chattram -chattrāt