Shown with a cast-on count of 62 stitches.  

• Rows 1 and 3 (RS): K19, p3, *k15, p3, repeat from * to last 4 sts, k4.
• Rows 2 and 4: K7, p15, *k3, p15, repeat from * to last 4 sts, k4.
• Rows 5 and 7: K7, p15, *k3, p15, repeat from * to last 4 sts, k4.
• Rows 6 and 8: K19, p3, *k15, p3, repeat from * to last 4 sts, k4.
• Rows 9 and 11: K7, *p3, k15, repeat from * to last st, k1.
• Rows 10 and 12: K4, p12, *k3, p15, repeat from * to last 10 sts, k3, p3, k4.
• Rows 13 and 15: K4, p6, *k3, p15, repeat from * to last 16 sts, k3, p9, k4.
• Rows 14 and 16: K13, *p3, k15, repeat from * to last 13 sts, p3, k10.
• Rows 17 and 19: K13, *p3, k15, repeat from * to last 13 sts, p3, k10.
• Rows 18 and 20: K4, p6, *k3, p15, repeat from * to last 16 sts, k3, p9, k4.
• Rows 21 and 23: K4, p12, *k3, p15, repeat from * to last 10 sts, k3, p3, k4.
• Rows 22 and 24: K7, *p3, k15, repeat from * to last st, k1.
• Repeat rows 1-24.