Shown with a cast-on count of 18 stitches.  

• Row 1 (RS): K5, *p3, k3, repeat from * to last st, p1.
• Row 2: K1, *p3, k3, repeat from * to last 5 sts, p5.
• Rows 3 and 15: K4, *p3, k3, repeat from * to last 2 sts, p2.
• Rows 4 and 16: K2, *p3, k3, repeat from * to last 4 sts, p4.
• Rows 5 and 13: K3, *p3, k3, repeat from * to last 3 sts, p3.
• Rows 6 and 14: K3, *p3, k3, repeat from * to last 3 sts, p3.
• Rows 7 and 11: K2, *p3, k3, repeat from * to last 4 sts, p4.
• Rows 8 and 12: K4, *p3, k3, repeat from * to last 2 sts, p2.
• Row 9: K1, *p3, k3, repeat from * to last 5 sts, p5.
• Row 10: K5, *p3, k3, repeat from * to last st, p1.