Shown with a cast-on count of 15 stitches.  

• Row 1 (RS): Sl1 wyif, k2, yo, [k2tog, yo] twice, k3, yo, k2tog, [yo] twice, k3 (18 sts).
• Row 2: K4, p11, yo, k2tog, k1.
• Row 3: Sl1 wyif, k2, yo, [k2tog, yo] twice, k5, yo, k2tog, [yo] twice, k2, [yo] 3 times, k2 (24 sts).
• Row 4: K2, p1, k1, p1, k3, p13, yo, k2tog, k1.
• Row 5: Sl1 wyif, k2, yo, [k2tog, yo] twice, k7, yo, k2tog, [yo] twice, k2tog, k6 (26 sts).
• Row 6: BO 5 sts, k2, p15, yo, k2tog, k1 (21 sts).
• Row 7: Sl1 wyif, k2, yo, k3tog, yo, k2tog, yo, k2, sl1-k2tog-psso, k2, yo, k3tog, [yo] twice, k3 (20 sts).
• Row 8: K4, p13, yo, k2tog, k1.
• Row 9: Sl1 wyif, k2, yo, k3tog, yo, k2tog, yo, k1, sl1-k2tog-psso, k1, yo, k3tog, [yo] twice, k2, [yo] 3 times, k2 (22 sts).
• Row 10: K2, p1, k1, p1, k3, p11, yo, k2tog, k1.
• Row 11: Sl1 wyif, k2, yo, k3tog, yo, k2tog, yo, sl1-k2tog-psso, yo, k3tog, [yo] twice, k2tog, k6 (20 sts).
• Row 12: BO 5 sts, k2, p9, yo, k2tog, k1 (15 sts).