Cast on a number of sts mult of 10 + 1.
Row 1: k1, *yo, k3, sl1-k2tog-psso, k3, yo, k1*.
Row 2: purl
Row 3: k1 *k1, yo, k2, sl1-k2tog-psso, k2, yo, k2*.
Row 4: purl
Row 5: k1 *k2, yo, k1, sl1-k2tog-psso, k1, yo, k3*.
Row 6: purl
Row 7: k1 *k3, yo, sl1-k2tog-psso, yo, k4*.
Row 8: purl
Repeat rows 1 to 8.