Shown with a cast-on count of 13 stitches.  

• Round 1: K9, k3tog, yo, k1, yo.
• Rounds 2, 4, 6, 8, 10, 12, 14, and 16: Knit.
• Round 3: K7, k3tog, [k1, yo] twice, k1.
• Round 5: K5, k3tog, k2, yo, k1, yo, k2.
• Round 7: K3, k3tog, k3, yo, k1, yo, k3.
• Round 9: Yo, k1, yo, sl1-k2tog-psso, k9.
• Round 11: K1, [yo, k1] twice, sl1-k2tog-psso, k7.
• Round 13: K2, yo, k1, yo, k2, sl1-k2tog-psso, k5.
• Round 15: K3, yo, k1, yo, k3, sl1-k2tog-psso, k3.