Shown with a cast-on count of 18 stitches.  

• Row 1 (RS): Sl1 wyib, k2, *yo, k1, yo, k2tog, k1, k2tog, repeat from * to last 3 sts, k3.
• Rows 2, 4, 6, and 8: Sl1 wyif, k2, purl to last 3 sts, k3.
• Row 3: Sl1 wyib, k2, *yo, k3, yo, sl1-k2tog-psso, repeat from * to last 3 sts, k3.
• Row 5: Sl1 wyib, k2, *k2tog, k1, k2tog, yo, k1, yo, repeat from * to last 3 sts, k3.
• Row 7: Sl1 wyib, k2, *sl1-k2tog-psso, yo, k3, yo, repeat from * to last 3 sts, k3.