Shown with a cast-on count of 33 stitches.  

• Rows 1 and 21 (RS): K33.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22: P33.
• Row 3: [K3, k2tog, yo, k3] 4 times, k1.
• Row 5: K3, yo, sl2-k1-p2sso, yo, k4, [k2tog, yo] twice, k4, k2tog, yo, k1, yo, k2tog, k3, k2tog, yo, k1, yo, ssk, k2.
• Row 7: K4, yo, k2tog, k5, k2tog, yo, k7, yo, k2tog, k6, yo, ssk, k3.
• Row 9: K8, yo, k2tog, k5, k2tog, yo, k7, yo, k2tog, k7.
• Row 11: K6, k2tog, yo, k1, yo, k2tog, k4, yo, sl2-k1-p2sso, yo, k5, [yo, k2tog] twice, k6.
• Row 13: K1, [k6, k2tog, yo] twice, k7, yo, k2tog, k7.
• Row 15: [K3, ssk, yo, k3] twice, k4, yo, ssk, k6, yo, k2tog, k3.
• Row 17: K3, yo, sl2-k1-p2sso, yo, k4, [ssk, yo] twice, k5, [yo, ssk] twice, k4, yo, sl2-k1-p2sso, yo, k3.
• Row 19: K4, yo, k2tog, k5, ssk, yo, k7, yo, ssk, k6, yo, k2tog, k3.