Shown with a cast-on count of 37 stitches.  

• Row 1 (RS): K1, *ssk, k3, yo, k1, yo, k3, k2tog, k1, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24: Purl.
• Row 3: K1, *ssk, k2, yo, k3, yo, k2, k2tog, k1, repeat from *.
• Row 5: K1, *yo, ssk, k1, yo, ssk, k1, k2tog, yo, k1, k2tog, yo, k1, repeat from *.
• Row 7: K2, *yo, ssk, k1, yo, sl1-k2tog-psso, yo, k1, k2tog, yo, k3, repeat from * to last 11 sts, yo, ssk, k1, yo, sl1-k2tog-psso, yo, k1, k2tog, yo, k2.
• Row 9: K1, *yo, ssk, yo, ssk, k3, k2tog, yo, k2tog, yo, k1, repeat from *.
• Row 11: K2, *yo, ssk, yo, ssk, k1, k2tog, yo, k2tog, yo, k3, repeat from * to last 11 sts, yo, ssk, yo, ssk, k1, k2tog, yo, k2tog, yo, k2.
• Row 13: K1, *yo, k3, k2tog, k1, ssk, k3, yo, k1, repeat from *.
• Row 15: K2, *yo, k2, k2tog, k1, ssk, k2, yo, k3, repeat from * to last 11 sts, yo, k2, k2tog, k1, ssk, k2, yo, k2.
• Row 17: K1, *k2tog, yo, k1, k2tog, yo, k1, yo, ssk, k1, yo, ssk, k1, repeat from *.
• Row 19: K2tog, yo, k1, k2tog, yo, k3, *yo, ssk, k1, yo, sl1-k2tog-psso, yo, k1, k2tog, yo, k3, repeat from * to last 5 sts, yo, ssk, k1, yo, ssk.
• Row 21: K2, *k2tog, yo, k2tog, yo, k1, yo, ssk, yo, ssk, k3, repeat from * to last 11 sts, k2tog, yo, k2tog, yo, k1, yo, ssk, yo, ssk, k2.
• Row 23: K1, *k2tog, yo, k2tog, yo, k3, yo, ssk, yo, ssk, k1, repeat from *.
• Repeat rows 1-24.