Shown with a cast-on count of 31 stitches.  

• Row 1 (RS): K3, *k3, k2tog, k3, yo, k1, yo, ssk, k3, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K3, *k2, k2tog, k4, yo, k1, yo, ssk, k3, repeat from *.
• Row 5: K3, *k1, k2tog, k5, yo, k1, yo, ssk, k3, repeat from *.
• Row 7: K3, *k2tog, k6, yo, k1, yo, ssk, k3, repeat from *.
• Row 9: K3, *k2tog, yo, k1, yo, k3, ssk, k6, repeat from *.
• Row 11: K3, *k2tog, yo, k1, yo, k4, ssk, k5, repeat from *.
• Row 13: K3, *k2tog, yo, k1, yo, k5, ssk, k4, repeat from *.
• Row 15: K3, *k2tog, yo, k1, yo, k6, ssk, k3, repeat from *.