Interlaced Double Running Stitch No 3
A variety of running stitch

Double interlaced running stitch creates an attractive line of waves.
First work two rows of running stitch. Lace or thread the stitches with a contrasting colour or weight thread. You can also thread a fine ribbon through the running stitch foundation.
Use a tapestry needle to avoid splitting the foundation running stitch. With this stitch, take care to lace and not to pick up any of the fabric.

This stitch makes a good crazy patchwork stitch particularly in combination with other stitches. A bead, detached chain stitch or a French knot can be placed between each wave.