Shown with a cast-on count of 84 stitches.  

• Row 1 (RS): K4, ssk, yo, k2tog, yo, k3, yo, yo, ssk, yo, k2tog, k5, ssk, yo, k2tog, yo, k1, *k2, yo, ssk, yo, k2tog, k5, ssk, yo, k2tog, yo, k1, repeat from * to last 27 sts, k2, yo, ssk, yo, k2tog, k5, ssk, yo, k2tog, k3, yo, ssk, yo, k2tog, k3, k2tog (multiple of 16 sts, plus 51).
• Rows 2 and 4: Purl to last 2 sts, p2tog (1 less st).
• Row 3: K5, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k3, ssk, yo, k4, yo, ssk, yo, *sl1-k2tog-psso, yo, k2tog, yo, k3, ssk, yo, k4, yo, ssk, yo, repeat from * to last 27 sts, sl1-k2tog-psso, yo, k2tog, yo, k3, ssk, yo, k4, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k4, k2tog (multiple of 16 sts, plus 49).