Shown with a cast-on count of 66 stitches.  

• Rows 1 and 17 (RS): Purl.
• Row 2 (RS): K2, *k2, yo, k4, ssk, k16, k2tog, yo, k6, repeat from *.
• Rows 3, 5, 7, 9, 11, 13, and 15: Purl.
• Row 4: K2, *k3, yo, k3, ssk, k6, yo, ssk, k2tog, yo, k6, k2tog, k3, yo, k3, repeat from *.
• Row 6: K2, *k6, yo, ssk, yo, k6, ssk, k2tog, yo, k6, k2tog, yo, k6, repeat from *.
• Row 8: K2, *k5, yo, k1, ssk, yo, k6, ssk, k2tog, yo, k6, k2tog, k4, yo, k2, repeat from *.
• Row 10: K2, *yo, k6, ssk, k5, yo, k1, ssk, k2tog, k4, yo, k2, k2tog, yo, k6, repeat from *.
• Row 12: K2, *k1, yo, k5, ssk, k5, yo, k1, ssk, k2tog, k4, yo, k2, k6, yo, ssk, repeat from *.
• Row 14: K2, *yo, k6, ssk, k16, k5, yo, k1, ssk, repeat from *.