Shown with a cast-on count of 27 stitches.  

• Rows 1, 3, 5, and 7 (RS): *K3, k2tog, k3, yo, repeat from * to last 3 sts, k3.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, and 32: Purl.
• Row 9: K2, k2tog, *k3, yo, k3, k2tog, repeat from * to last 7 sts, k3, yo, k4.
• Row 11: K1, k2tog, *k3, yo, k3, k2tog, repeat from * (multiple of 8 sts, plus 2).
• Row 13: K2tog, *k3, yo, k3, k2tog, repeat from * (multiple of 8 sts, plus 1).
• Rows 15, 25, 27, 29, and 31: K4, yo, *k3, k2tog, k3, yo, repeat from * to last 5 sts, k3, k2tog.
• Rows 17, 19, 21, and 23: K2tog, *k3, yo, k3, k2tog, repeat from * to last 7 sts, k3, yo, k4.