Write the next sentence in the following story.

How to repair concrete steps
Clean the damaged portion of the concrete step.
Remove all loose gravel, sand, dirt, and cement with a clean, stiff wire brush.
Make a form.
Screw 2 short pieces of 1 inch by 6 inch (2.54 cm by 15. 24 cm) lumber together at a 90-degree angle to form an " l " shape.