Come:

This command comes very easily because the dog wants to come to you. Put dog in a sit or down and then do walking away get in front of the dog and face him. With your left hand take your arm out and scoop it in towards your chest saying the word come. Motivate the dog to come to you; patting your legs or bending down slightly when the dog begins to approach you says good boy/girl. As the dog approaches you make your loop and when he gets right in front of you, give him a small correction and say “NO” sit. Usually the dog will learn this in just one work out. Go back into a heel, down from the side or anything the dog has learned so far.

It is very important to mix the commands up when doing a workout. You do not want to program the dog; you want keep the dog focused and eager for your next command