Shown with a cast-on count of 41 stitches.  

• Row 1 (RS): K3, k17, k1, k17, k3.
• Row 2: P3, p35, p3.
• Row 3: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, yo, k1, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (43 sts).
• Row 4: K3, k37, k3.
• Row 5: K3, k37, k3.
• Row 6: P3, p37, p3.
• Row 7: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 3 times, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (47 sts).
• Row 8: K3, k41, k3.
• Row 9: K3, k41, k3.
• Row 10: P3, p41, p3.
• Row 11: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, k1, [yo, k1] 5 times, yo, k1, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (53 sts).
• Row 12: K3, k47, k3.
• Row 13: K3, k47, k3.
• Row 14: P3, p47, p3.
• Row 15: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 3 times, yo, [ssk] twice, k1, k2tog, [yo, k1] 3 times, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (58 sts).
• Row 16: K3, k52, k3.
• Row 17: K3, k52, k3.
• Row 18: P3, p52, p3.
• Row 19: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] twice, [k2tog] twice, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (66 sts).
• Row 20: K3, k60, k3.
• Row 21: K3, k60, k3.
• Row 22: P3, p60, p3.
• Row 23: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] 3 times, k2, yo, k1, yo, k1, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (74 sts).
• Row 24: K3, k68, k3.
• Row 25: K3, k68, k3.
• Row 26: P3, p68, p3.
• Row 27: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] twice, k1, [yo, k1] 3 times, yo, [ssk] twice, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (80 sts).
• Row 28: K3, k74, k3.
• Row 29: K3, k74, k3.
• Row 30: P3, p74, p3.
• Row 31: K3, yo, [k1, yo] 5 times, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] 3 times, k1, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] 3 times, [yo, k1] 5 times, yo, [ssk] 3 times, [k2tog] 3 times, yo, [k1, yo] 5 times, k3 (86 sts).
• Row 32: K3, k80, k3.
• Row 33: K3, k80, k3.
• Row 34: P3, p80, p3.