Shown with a cast-on count of 19 stitches.  

• Rows 1 and 3 (RS): Sl1 wyib, k1, yo, k2, sl1-k2tog-psso, k2, yo, k1, yo, k2, sl1-k2tog-psso, k2, yo, k2.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Sl1 wyif, purl.
• Rows 5, 7, 9, 15, 17, and 19: Sl1 wyib, knit.
• Rows 11 and 13: Sl1 wyib, ssk, k2, yo, k1, yo, k2, sl1-k2tog-psso, k2, yo, k1, yo, k2, k2tog, k1.