Shown with a cast-on count of 9 stitches.  

• Row 1 (WS): K9.
• Row 2: Sl1 wyib, k2, [k2tog, yo] twice, k1, yo, k1 (10 sts).
• Rows 3 and 11: K10.
• Row 4: Sl1 wyib, k1, [k2tog, yo] twice, k3, yo, k1 (11 sts).
• Rows 5 and 9: K11.
• Row 6: Sl1 wyib, [k2tog, yo] twice, k5, yo, k1 (12 sts).
• Row 7: K12.
• Row 8: Sl1 wyib, k2, [yo, k2tog] twice, k1, k2tog, yo, k2tog (11 sts).
• Row 10: Sl1 wyib, k3, yo, k2tog, yo, k3tog, yo, k2tog (10 sts).
• Row 12: Sl1 wyib, k4, yo, k3tog, yo, k2tog (9 sts).