Shown with a cast-on count of 27 stitches.  

• Row 1 (RS): Kfb, k1, [yo, k2tog, k3] twice, [yo, k2tog] 5 times, k2, yo, k2tog, k1 (28 sts).
• Rows 2, 4, 6, 10, 14, 18, 20, 22, and 24: Sl1 wyib, k2, purl.
• Row 3: Kfb, k3, [yo, k2tog, k3] twice, [yo, k2tog] 5 times, k1, yo, k2tog, k1 (29 sts).
• Row 5: Kfb, k5, [yo, k2tog, k3] twice, [yo, k2tog] 4 times, k2, yo, k2tog, k1 (30 sts).
• Row 7: Kfb, k1, ssk, yo wrapping yarn twice, k2tog, k2, [yo, k2tog, k3] twice, [yo, k2tog] 4 times, k1, yo, k2tog, k1.
• Row 8: Sl1 wyib, k2, p22, kfb, p4 (31 sts).
• Row 9: Kfb, k9, [yo, k2tog, k3] twice, [yo, k2tog] 3 times, k2, yo, k2tog, k1 (32 sts).
• Row 11: K2, [ssk, yo wrapping yarn twice, k2tog] twice, k2, [yo, k2tog, k3] twice, [yo, k2tog] 3 times, k1, yo, k2tog, k1 (30 sts).
• Row 12: Sl1 wyib, k2, p20, kfb, p2, kfb, p3 (32 sts).
• Row 13: K2tog, k8, [k2tog, yo, k3] twice, k2tog, yo, k1, [yo, k2tog] twice, k2, yo, k2tog, k1 (31 sts).
• Row 15: K2tog, k1, ssk, yo wrapping yarn twice, k2tog, k1, [k2tog, yo, k3] twice, k2tog, yo, k1, [yo, k2tog] 3 times, k1, yo, k2tog, k1 (29 sts).
• Row 16: Sl1 wyib, k2, p22, kfb, p3 (30 sts).
• Row 17: K2tog, k4, [k2tog, yo, k3] twice, k2tog, yo, k1, [yo, k2tog] 3 times, k2, yo, k2tog, k1 (29 sts).
• Row 19: K2tog, k2, [k2tog, yo, k3] twice, k2tog, yo, k1, [yo, k2tog] 4 times, k1, yo, k2tog, k1 (28 sts).
• Row 21: K2tog, [k2tog, yo, k3] twice, k2tog, yo, k1, [yo, k2tog] 4 times, k2, yo, k2tog, k1 (27 sts).
• Row 23: [K2tog, yo, k3] twice, k2tog, yo, k1, [yo, k2tog] 5 times, k1, yo, k2tog, k1.