Shown with a cast-on count of 22 stitches.  

• Row 1 (RS): K9, k1 tbl, yo, k2, yo, k1 tbl, k9 (24 sts).
• Rows 2 and 12: P24.
• Row 3: K2tog, [yo, k1, yo, k3tog] twice, yo, k2tog, ssk, yo, [sl1-k2tog-psso, yo, k1, yo] twice, ssk (22 sts).
• Rows 4, 6, 10, 26, and 28: P22.
• Row 5: K7, k2tog, yo, k4, yo, ssk, k7.
• Row 7: K1, yo, k3tog, yo, k1, yo, k3tog, yo, ssk, k2, k2tog, yo, sl1-k2tog-psso, yo, k1, yo, sl1-k2tog-psso, yo, k1 (20 sts).
• Row 8: P20.
• Row 9: K5, k2tog, yo, ssk, yo, kfb, kfb, yo, k2tog, yo, ssk, k5 (22 sts).
• Row 11: K2tog, yo, k1, yo, k3tog, yo, ssk, k1, yo, k1, kfb, kfb, k1, yo, k1, k2tog, yo, sl1-k2tog-psso, yo, k1, yo, ssk (24 sts).
• Row 13: K3, k2tog, yo, ssk, k2, yo, k2, kfb, kfb, k2, yo, k2, k2tog, yo, ssk, k3 (26 sts).
• Rows 14, 20, 22, and 24: P26.
• Row 15: K1, yo, k3tog, yo, ssk, k3, yo, k3, kfb, kfb, k3, yo, k3, k2tog, yo, sl1-k2tog-psso, yo, k1 (28 sts).
• Row 16: P28.
• Row 17: K1, k2tog, yo, ssk, k4, yo, k4, kfb, kfb, k4, yo, k4, k2tog, yo, ssk, k1 (30 sts).
• Row 18: P30.
• Row 19: K2tog, yo, ssk, k3, k2tog, yo, ssk, k8, k2tog, yo, ssk, k3, k2tog, yo, ssk (26 sts).
• Row 21: K1 tbl, yo, ssk, k2, k2tog, yo, k1, yo, ssk, k6, k2tog, yo, k1, yo, ssk, k2, k2tog, yo, k1 tbl.
• Row 23: K1 tbl, yo, ssk, k1, k2tog, yo, k3, yo, ssk, k4, k2tog, yo, k3, yo, ssk, k1, k2tog, yo, k1 tbl.
• Row 25: K1 tbl, yo, ssk, k2tog, yo, ssk, k1, k2tog, yo, ssk, k2, k2tog, yo, ssk, k1, k2tog, yo, ssk, k2tog, yo, k1 tbl (22 sts).
• Row 27: K1 tbl, [yo, sl1-k2tog-psso, yo, k1] twice, yo, ssk, k2tog, yo, [k1, yo, k3tog, yo] twice, k1 tbl.