Shown with a cast-on count of 22 stitches.  

• Round 1: K8, k1, p1, 1/1 RC, p1, k1, k8.
• Round 3: K7, k2tog, p1, k1, k1, p1, ssk, k7 (20 sts).
• Round 5: K6, k2tog, p1, yo, k1, yo, yo, k1, yo, p1, ssk, k6 (22 sts).
• Round 7: K5, k2tog, p1, yo, k1, ssk, yo, yo, k2tog, k1, yo, p1, ssk, k5.
• Round 9: K4, k2tog, p1, yo, k2tog, yo, ssk, yo, yo, k2tog, yo, ssk, yo, p1, ssk, k4.
• Round 11: K3, k2tog, p1, yo, k2tog, k1, yo, ssk, yo, yo, k2tog, yo, k1, ssk, yo, p1, ssk, k3.
• Round 13: K2, k2tog, p1, yo, k2tog, k2, yo, ssk, yo, yo, k2tog, yo, k2, ssk, yo, p1, ssk, k2.
• Round 15: K1, k2tog, p1, yo, k2tog, k3, yo, ssk, yo, yo, k2tog, yo, k3, ssk, yo, p1, ssk, k1.
• Round 17: K2tog, p1, yo, ssk, k4, yo, ssk, yo, yo, k2tog, yo, k4, k2tog, yo, p1, ssk.
• Round 19: Yo, ssk, k1, yo, ssk, k4, yo, ssk, yo, k2tog, yo, k4, k2tog, yo, k1, k2tog, yo (23 sts).
• Round 21: K1, yo, ssk, k1, yo, ssk, k4, yo, sl1-k2tog-psso, yo, k4, k2tog, yo, k1, k2tog, yo, k1.
• Round 23: K2, yo, ssk, k1, yo, ssk, k9, k2tog, yo, k1, k2tog, yo, k2.
• Round 25: K3, yo, ssk, k1, yo, ssk, k7, k2tog, yo, k1, k2tog, yo, k3.
• Round 27: K4, yo, ssk, k1, yo, ssk, k5, k2tog, yo, k1, k2tog, yo, k4.
• Round 29: K5, yo, ssk, k1, yo, k1, k5, k1, yo, k1, k2tog, yo, k5 (25 sts).
• Round 31: K6, yo, ssk, k1, yo, ssk, k3, k2tog, yo, k1, k2tog, yo, k6.
• Round 33: K7, yo, ssk, k1, yo, k1, k3, k1, yo, k1, k2tog, yo, k7 (27 sts).
• Round 35: K8, yo, ssk, k1, yo, ssk, k1, k2tog, yo, k1, k2tog, yo, k8.
• Round 37: K9, yo, ssk, k1, yo, ssk, k1, yo, k1, k2tog, yo, k9 (28 sts).
• Round 39: K10, yo, ssk, k1, yo, k2tog, yo, k1, k2tog, yo, k10 (29 sts).
• Round 41: K11, yo, ssk, k3, k2tog, yo, k11.
• Round 43: K12, yo, ssk, k1, k2tog, yo, k12.
• Round 45: K13, yo, sl1-k2tog-psso, yo, k13.