Shown with a cast-on count of 29 stitches.  

• Row 1 (RS): *K6, yo, p3, k3, p2tog, repeat from * to last st, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Rows 3 and 19: *K5, yo, p3, k3, p2tog, k1, repeat from * to last st, k1.
• Rows 5 and 17: *K4, yo, p3, k3, p2tog, k2, repeat from * to last st, k1.
• Rows 7 and 15: *K3, yo, p3, k3, p2tog, k3, repeat from * to last st, k1.
• Rows 9 and 13: *K2, yo, p3, k3, p2tog, k4, repeat from * to last st, k1.
• Row 11: *K1, yo, p3, k3, p2tog, k5, repeat from * to last st, k1.