Shown with a cast-on count of 1 stitch.  

• Round 1: K1.
• Rounds 2, 4, 6, 8, 10, 12, and 14: Knit.
• Round 3: 1-To-9 inc (9 sts).
• Round 5: K3, yo, k3, yo, k3 (11 sts).
• Round 7: Sl1-k2tog-psso, yo, k1, yo, k3, yo, k1, yo, k3tog.
• Round 9: K4, yo, k3tog, yo, k4.
• Round 11: K1, sl1-k2tog-psso, k3, k3tog, k1 (7 sts).
• Round 13: Sl1-k2tog-psso, k1, k3tog (3 sts).
• Round 15: K3tog (1 st).
• Round 17: Kfb (2 sts).