Respuesta :
Ud. is the contraction for usted. This pronoun is third person, singular.
The commands are:
Mire usted or you can omit the pronou: mire
Viva usted or viva
Nade usted or nade
The commands are:
Mire usted or you can omit the pronou: mire
Viva usted or viva
Nade usted or nade