Tapping without words is especially useful when you're tapping by yourself and you don't know what to say, or what you want to say ends up confusing you and you can't see the woods for the trees.
Tap both the sides of your hands together (the karate chop points) and keep going until you yawn, sigh, burp, whatever signs that you get that let you know things are shifting and moving. (Do this on every point). The karate chop point (small intestine meridian where we assimilate food, experiences etc) corrects psychological reversal, which is any block you may have to releasing the issue/feeling/body sensation. It sets your system up for tapping and makes tapping much more effective.
Then start tapping down through the points, you can do the shortcut or the basic recipe for EFT. Start with the basic recipe as the 9 gamut can often shift trapped/frozen/blocked emotions/issues/body sensations. Also, as you tap down through the points, try tapping alternately on the bilateral points. The bilateral points are the eyebrows, sides of eye, under eyes, collar bone, and under the arm points. This is similar to the bilateral stimulation of the brain and body that you find in EMDR (Eye Movement Desensitisation and Reprocessing Therapy), which is most likely why the 9 gamut sequence works so well. I find tapping alternately on the points helps to relieve stress levels quite quickly. Keep going until you feel a shift/movement or until you feel like you are "done" so to speak. Repeat as necessary :-)