|Sample knit with worsted weight wool on US 8 needles|
To make clusters: k3, slip those 3 sts from right needle onto a cable or DPN (should be same size as needle used in project or smaller - a larger DPN can stretch your stitches); wrap working yarn counterclockwise around stitches six times, then slip those three stitches back to right needle.
Row 1 and all WS rows: purl
Row 2: knit
Row 4: k4 *cluster, k3; rep from *, end k1
Row 6: knit
Row 8: k1 *cluster, k3; rep from *, end cluster, k1
Repeat these 8 rows for pattern.