Shown with a cast-on count of 10 stitches.  

• Row 1 (RS): K2, k2tog, yo, k4, k2tog, yo.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: P10.
• Row 3: K1, k2tog, yo, k4, k2tog, yo, k1.
• Row 5: K1, ssk, yo, k3, k2tog, yo, k2.
• Row 7: K2, ssk, yo, k1, k2tog, yo, k3.
• Row 9: K4, k2tog, yo, k4.
• Row 11: K4, yo, k2tog, k4.
• Row 13: K3, yo, k2tog, k1, yo, ssk, k2.
• Row 15: K2, yo, k2tog, k3, yo, ssk, k1.
• Row 17: K1, yo, k2tog, k4, yo, k2tog, k1.
• Row 19: Yo, k2tog, k4, yo, k2tog, k2.