Shown with a cast-on count of 8 stitches.  

• Rows 1 and 11 (RS): Sl1 wyib, k1, yo, k2tog, yo, k2tog, yo, k2 (9 sts).
• Rows 2 and 12: K8, k1.
• Rows 3 and 13: Sl1 wyib, k2, yo, k2tog, yo, k2tog, yo, k2 (10 sts).
• Rows 4 and 14: K9, k1.
• Rows 5 and 15: Sl1 wyib, k3, yo, k2tog, yo, k2tog, yo, k2 (11 sts).
• Rows 6 and 16: K10, k1.
• Rows 7 and 17: Sl1 wyib, k4, yo, k2tog, yo, k2tog, yo, k2 (12 sts).
• Rows 8 and 18: K11, k1.
• Rows 9 and 19: Sl1 wyib, k11.
• Row 10: BO 4 sts, k7 (8 sts).
• Row 20: BO 3 sts, k8 (9 sts).