Shown with a cast-on count of 38 stitches.  

• Rows 1, 3, 5, 7, and 9 (RS): Knit.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22: Purl.
• Row 11: K16, k2tog, yo, k2, yo, ssk, k16.
• Row 13: K15, k2tog, yo, k4, yo, ssk, k15.
• Row 15: K14, k2tog, yo, k2tog, yo, k2, yo, ssk, yo, ssk, k14.
• Row 17: K13, k2tog, yo, k2tog, yo, k4, yo, ssk, yo, ssk, k13.
• Row 19: K12, k2tog, yo, k2tog, yo, k6, yo, ssk, yo, ssk, k12.
• Row 21: K11, k2tog, yo, k2tog, yo, k8, yo, ssk, yo, ssk, k11.