Shown with a cast-on count of 27 stitches.  

• Row 1 (RS): Sl1 wyif, k1, yo, k2tog, k1, [yo, k2tog] twice, k5, yo, k2tog, k1, [yo] twice, k2tog, k6, yo, p2tog (28 sts).
• Row 2: Yo, p2tog, k8, p1, k2, yo, k2tog, k10, yo, k2tog, k1.
• Row 3: Sl1 wyif, k1, yo, k2tog, k2, [yo, k2tog] twice, k4, yo, k2tog, k10, yo, p2tog.
• Row 4: Yo, p2tog, k11, yo, k2tog, k10, yo, k2tog, k1.
• Row 5: Sl1 wyif, k1, yo, k2tog, k3, [yo, k2tog] twice, k3, yo, k2tog, k1, [[yo] twice, k2tog] twice, k5, yo, p2tog (30 sts).
• Row 6: Yo, p2tog, k7, [p1, k2] twice, yo, k2tog, k10, yo, k2tog, k1.
• Row 7: Sl1 wyif, k1, yo, k2tog, k4, [yo, k2tog] twice, k2, yo, k2tog, k12, yo, p2tog.
• Row 8: Yo, p2tog, k13, yo, k2tog, k10, yo, k2tog, k1.
• Row 9: Sl1 wyif, k1, yo, k2tog, k5, [yo, k2tog] twice, k1, yo, k2tog, k1, [[yo] twice, k2tog] 3 times, k5, yo, p2tog (33 sts).
• Row 10: Yo, p2tog, k7, [p1, k2] 3 times, yo, k2tog, k10, yo, k2tog, k1.
• Rows 11 and 23: Sl1 wyif, k1, yo, k2tog, k10, yo, k2tog, k8, k7tog, yo, p2tog (27 sts).
• Row 12: Yo, p2tog, k10, yo, k2tog, k1, [yo, k2tog] twice, k5, yo, k2tog, k1.
• Row 13: Sl1 wyif, k1, yo, k2tog, k10, yo, k2tog, k1, [yo] twice, k2tog, k6, yo, p2tog (28 sts).
• Row 14: Yo, p2tog, k8, p1, k2, yo, k2tog, k2, [yo, k2tog] twice, k4, yo, k2tog, k1.
• Row 15: Sl1 wyif, k1, [yo, k2tog, k10] twice, yo, p2tog.
• Row 16: Yo, p2tog, k11, yo, k2tog, k3, [yo, k2tog] twice, k3, yo, k2tog, k1.
• Row 17: Sl1 wyif, k1, yo, k2tog, k10, yo, k2tog, k1, [[yo] twice, k2tog] twice, k5, yo, p2tog (30 sts).
• Row 18: Yo, p2tog, k7, [p1, k2] twice, yo, k2tog, k4, [yo, k2tog] twice, k2, yo, k2tog, k1.
• Row 19: Sl1 wyif, k1, yo, k2tog, k10, yo, k2tog, k12, yo, p2tog.
• Row 20: Yo, p2tog, k13, yo, k2tog, k5, [yo, k2tog] twice, k1, yo, k2tog, k1.
• Row 21: Sl1 wyif, k1, yo, k2tog, k10, yo, k2tog, k1, [[yo] twice, k2tog] 3 times, k5, yo, p2tog (33 sts).
• Row 22: Yo, p2tog, k7, [p1, k2] 3 times, yo, k2tog, k6, [yo, k2tog] 3 times, k1.
• Row 24: Yo, p2tog, [k10, yo, k2tog] twice, k1.