Shown with a cast-on count of 31 stitches.  

• Row 1 (RS): K1, *yo, ssk, k5, k2tog, yo, k1, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K1, *yo, k1, ssk, k3, k2tog, k1, yo, k1, repeat from *.
• Row 5: K1, *yo, k2, ssk, k1, k2tog, k2, yo, k1, repeat from *.
• Row 7: K1, *yo, k3, sl1-k2tog-psso, k3, yo, k1, repeat from *.
• Row 9: K1, *k2, k2tog, yo, k1, yo, ssk, k3, repeat from *.
• Row 11: K1, *k1, k2tog, [k1, yo] twice, k1, ssk, k2, repeat from *.
• Row 13: K1, *k2tog, k2, yo, k1, yo, k2, ssk, k1, repeat from *.
• Row 15: K2tog, k3, yo, k1, *yo, k3, sl1-k2tog-psso, k3, yo, k1, repeat from * to last 5 sts, yo, k3, ssk.