Shown with a cast-on count of 22 stitches.  

• Rows 1 and 13 (RS): K2, *k3, p3, repeat from * to last 2 sts, k2.
• Rows 2 and 14: K2, *k3, p3, repeat from * to last 2 sts, k2.
• Rows 3 and 23: K2, p1, *k3, p3, repeat from * to last 7 sts, k3, p2, k2.
• Rows 4 and 24: K4, *p3, k3, repeat from * to last 6 sts, p3, k3.
• Rows 5 and 21: K2, p2, *k3, p3, repeat from * to last 6 sts, k3, p1, k2.
• Rows 6 and 22: K3, *p3, k3, repeat from * to last 7 sts, p3, k4.
• Rows 7 and 19: K2, *p3, k3, repeat from * to last 2 sts, k2.
• Rows 8 and 20: K2, *p3, k3, repeat from * to last 2 sts, k2.
• Rows 9 and 17: K3, *p3, k3, repeat from * to last 7 sts, p3, k4.
• Rows 10 and 18: K2, p2, *k3, p3, repeat from * to last 6 sts, k3, p1, k2.
• Rows 11 and 15: K4, *p3, k3, repeat from * to last 6 sts, p3, k3.
• Rows 12 and 16: K2, p1, *k3, p3, repeat from * to last 7 sts, k3, p2, k2.