Fourth declension.

Case Singular Plural
Nominative {{{1}}}us {{{1}}}ūs
Genitive {{{1}}}ūs {{{1}}}uum
Dative {{{1}}}uī {{{1}}}ibus
Accusative {{{1}}}um {{{1}}}ūs
Ablative {{{1}}}ū {{{1}}}ibus
Vocative {{{1}}}us {{{1}}}ūs