Shown with a cast-on count of 77 stitches.  

• Rows 1, 3, and 5 (RS): K3, *yo, k4, sl1-k2tog-psso, k4, yo, k1, repeat from * to last 14 sts, yo, k4, sl1-k2tog-psso, k4, yo, k3.
• Rows 2, 4, 6, 8, 10, 12, and 14: K3, purl to last 3 sts, k3.
• Row 7: K3, *k2tog, k2tog, sl1-k2tog-psso, k2tog, k2tog, k1, repeat from * to last 14 sts, k2tog, k2tog, sl1-k2tog-psso, k2tog, k2tog, k3 (multiple of 6 sts, plus 11).
• Rows 9, 11, and 13: K3, *yo, k3, k2tog, p1, ssk, k3, yo, k1, repeat from * to last 14 sts, yo, k3, k2tog, p1, ssk, k3, yo, k3.