Shown with a cast-on count of 36 stitches.  

• Rounds 1-2 and 10-11: *K17, p1, repeat from *.
• Round 3: *K2tog, k6, yo, k1, yo, k6, ssk, p1, repeat from *.
• Rounds 4 and 6: *K2tog, k13, ssk, p1, repeat from * (multiple of 16 sts).
• Round 5: *K2tog, k4, [yo, k1] 3 times, yo, k4, ssk, p1, repeat from * (multiple of 18 sts).
• Round 7: *K2tog, k2, [yo, k1] 7 times, yo, k2, ssk, p1, repeat from * (multiple of 22 sts).
• Round 8: *K2tog, k17, ssk, p1, repeat from * (multiple of 20 sts).
• Round 9: *K2tog, k15, ssk, p1, repeat from * (multiple of 18 sts).
• Rounds 12 and 14: Purl.
• Round 13: *K2tog, yo, repeat from *.