Shown with a cast-on count of 12 stitches.  

• Row 1 (RS): K2, yo, [k2tog] twice, yo, k3, yo, k3 (13 sts).
• Rows 2 and 28: Yo, k2tog, k1, yo, k2tog, k1, k2tog, yo, k3, yo, k2tog.
• Row 3: K2, yo, k2tog, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k3.
• Row 4: Yo, k2tog, k1, yo, k1, yo, k2, k2tog, yo, k3, yo, k2tog (15 sts).
• Row 5: K2, yo, k2tog, k2, yo, sl1-k2tog-psso, yo, k3, yo, k3 (16 sts).
• Rows 6 and 24: Yo, k2tog, k1, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, k3, yo, k2tog.
• Row 7: K2, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k3.
• Row 8: Yo, k2tog, k1, yo, k1, yo, k2, k2tog, yo, k1, yo, k2tog, k3, yo, k2tog (18 sts).
• Row 9: K2, yo, [k2tog] twice, yo, k3, yo, sl1-k2tog-psso, yo, k3, yo, k3 (19 sts).
• Rows 10 and 20: Yo, k2tog, k1, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, k1, k2tog, yo, k3, yo, k2tog.
• Row 11: K2, yo, k2tog, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k3.
• Row 12: Yo, k2tog, k1, yo, k1, yo, k2, k2tog, yo, k1, yo, k2tog, k1, k2tog, yo, k3, yo, k2tog (21 sts).
• Row 13: K2, yo, [k2tog] twice, yo, sl1-k2tog-psso, yo, k3, yo, sl1-k2tog-psso, yo, k3, yo, k3.
• Rows 14 and 16: Yo, k2tog, k1, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, k2, yo, k2tog.
• Row 15: K2, yo, [k2tog] twice, yo, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k3.
• Row 17: K2, yo, k2tog, k1, yo, k3, yo, sl1-k2tog-psso, yo, k3, yo, sl1-k2tog-psso, yo, k2tog, k2.
• Row 18: Yo, k2tog, k1, k2tog, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, k1, k2tog, yo, k2tog, k1, yo, k2tog (19 sts).
• Row 19: K2, yo, k2tog, yo, k2, yo, sl1-k2tog-psso, yo, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k2tog, k2.
• Row 21: K2, yo, [k2tog] twice, yo, sl1-k2tog-psso, yo, k3, yo, sl1-k2tog-psso, yo, k2tog, k2 (17 sts).
• Row 22: Yo, k2tog, k1, k2tog, yo, k2tog, k1, k2tog, yo, k1, yo, k2tog, k2, yo, k2tog (16 sts).
• Row 23: K2, yo, k2tog, k2, yo, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k2tog, k2.
• Row 25: K2, yo, [k2tog] twice, yo, k3, yo, sl1-k2tog-psso, yo, k2tog, k2 (15 sts).
• Row 26: Yo, k2tog, k1, k2tog, yo, k2tog, k1, k2tog, yo, k3, yo, k2tog (14 sts).
• Row 27: K2, yo, k2tog, k1, yo, k2tog, yo, sl1-k2tog-psso, yo, k2tog, k2 (13 sts).
• Row 29: K2, yo, k2tog, k2, yo, sl1-k2tog-psso, yo, k2tog, k2 (12 sts).
• Row 30: Yo, [k2tog] twice, yo, k1, yo, k2tog, k3, yo, k2tog.