Shown with a cast-on count of 12 stitches.  

• Row 1 (RS): K5, k2tog, yo, k5.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, and 18: P12.
• Row 3: K4, k2tog, yo, k2tog, yo, k4.
• Row 5: K3, k2tog, yo, k2tog, yo, k2tog, yo, k3.
• Row 7: K2, k2tog, yo, k2tog, yo, k2tog, yo, k2tog, yo, k2.
• Row 9: K1, k2tog, yo, k2tog, yo, k2tog, yo, k2tog, yo, k2tog, yo, k1.
• Row 11: K2, yo, k2tog, yo, k2tog, yo, k2tog, yo, k2tog, yo, k2tog.
• Row 13: K3, yo, k2tog, yo, k2tog, yo, k2tog, yo, k2tog, k1.
• Row 15: K4, yo, k2tog, yo, k2tog, yo, k2tog, k2.
• Row 17: K5, yo, k2tog, yo, k2tog, k3.
• Row 19: K6, yo, k2tog, k4.