Maybe you were looking for one of these abbreviations: RCMX-RCN-RCNC-RCNN-RCNO-RCO-AK-RCO-NE-RCoA-RCOCI-RCOE.
Measure the width of your quilt and add 4-6 (or chosen excess). Design a backing to equal that width, adding 1/2 to each panel for each seam you'll use to sew it to a neighboring panel. Cut panels to the length of your quilt plus 4-6 (or chosen excess). Sew panels together with a 1/2 seam allowance. Press seams open to reduce bulk. Press backing before use.
Make sure the quilt is pushed all the way into the binding, but just barely. Let it ride in there easily, not pulled tight or stretched to one side or the other. Sew the binding on along the first edge of the quilt, sewing all the way to the bottom edge. Backstitch and clip your threads. Check the back-the bottom stitching should look nearly the same as the top. Remove the quilt from the machine.