Shown with a cast-on count of 10 stitches.  

• Row 1 (RS): K10.
• Row 2: Yo, p2tog, k1, yo, p2tog, k1, [yo] twice, p1, k1, yo, p1, k1 (13 sts).
• Row 3: K6, p1, k3, yo, p2tog, k1.
• Row 4: Sl1 wyif, yo, p2tog, k1, yo, p2tog, k4, yo, p2tog, k1.
• Rows 5, 7, 9, and 11: K10, yo, p2tog, k1.
• Row 6: Sl1 wyif, yo, p2tog, k2, yo, p2tog, k3, yo, p2tog, k1.
• Row 8: Sl1 wyif, yo, p2tog, k3, yo, p2tog, k2, yo, p2tog, k1.
• Row 10: Sl1 wyif, yo, p2tog, k4, yo, p2tog, k1, yo, p2tog, k1.
• Row 12: Sl1 wyif, yo, p2tog, k5, yo, p2tog, k3.
• Row 13: BO 3 sts, k6, yo, p2tog, k1 (10 sts).
• Repeat rows 2-13.