Usted' can be shortened to 'Ud' and 'ustedes' can be shortened to 'Uds'. Irregular verbs in the present tense in Spanish Irregular verbs don’t follow the usual pattern in the present tense.

If you are doing something right now then that's the present tense… ‎ You use the present tense to give facts, to talk about what you do on a regular basis, and ‎to say what you are doing ...