Shown with a cast-on count of 37 stitches.  

• Rows 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19 (WS): Purl.
• Rows 2, 4, and 6: K2tog, *k2, yo, ssk, yo, k1, yo, k2tog, yo, k2, sl1-k2tog-psso, repeat from * to last 11 sts, k2, yo, ssk, yo, k1, yo, k2tog, yo, k2, ssk.
• Row 8: K2tog, *k1, yo, k2tog, yo, k3, yo, ssk, yo, k1, sl1-k2tog-psso, repeat from * to last 11 sts, k1, yo, k2tog, yo, k3, yo, ssk, yo, k1, ssk.
• Row 10: K2tog, *yo, k2tog, yo, k5, yo, ssk, yo, sl1-k2tog-psso, repeat from * to last 11 sts, yo, k2tog, yo, k5, yo, ssk, yo, ssk.
• Rows 12, 14, and 16: K1, *yo, k2tog, yo, k2, sl1-k2tog-psso, k2, yo, ssk, yo, k1, repeat from *.
• Row 18: K2, *yo, ssk, yo, k1, sl1-k2tog-psso, k1, yo, k2tog, yo, k3, repeat from * to last 11 sts, yo, ssk, yo, k1, sl1-k2tog-psso, k1, yo, k2tog, yo, k2.
• Row 20: K3, *yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k5, repeat from * to last 10 sts, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k3.