Shown with a cast-on count of 20 stitches.  

• Rows 1, 3, 9, and 11 (RS): Knit.
• Rows 2 and 10: Purl.
• Rows 4, 6, and 8: K6, *sl2 wyib, k4, repeat from * to last 2 sts, k2.
• Rows 5 and 7: P2, *p4, sl2 wyif, repeat from * to last 6 sts, p6.
• Rows 12, 14, and 16: K3, sl2 wyib, *k4, sl2 wyib, repeat from * to last 3 sts, k3.
• Rows 13 and 15: P3, *sl2 wyif, p4, repeat from * to last 5 sts, sl2 wyif, p3.