Shown with a cast-on count of 20 stitches.  

• Rows 1 and 3 (RS): P3, *k2, p4, repeat from * to last 5 sts, k2, p3.
• Rows 2, 4, and 12: K3, *p2, k4, repeat from * to last 5 sts, p2, k3.
• Row 5: P1, *1/2 RPC, 1/2 LPC, repeat from * to last st, p1.
• Rows 6, 8, and 10: K1, p1, *k4, p2, repeat from * to last 6 sts, k4, p1, k1.
• Rows 7 and 9: P1, k1, *p4, k2, repeat from * to last 6 sts, p4, k1, p1.
• Row 11: P1, *1/2 LPC, 1/2 RPC, repeat from * to last st, p1.