Shown with a cast-on count of 39 stitches.  

• Rows 1, 3, 5, and 7 (WS): Purl.
• Row 2: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k3, kfb, k2tog, yo, k2, k2tog, k2.
• Row 4: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k2, kfb, k2tog, yo, k2, k2tog, k1, yo, k2 (40 sts).
• Row 6: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k5, ssk, k2tog, yo, k2, yo, k2.