Shown with a cast-on count of 2 stitches.  

• Rounds 1-2, 4-5, 7-9, 11-13, 15-17, 19-21, 23-25, 27-29, 31-33, 35-37, and 39-41: Knit.
• Rounds 3 and 6: *K1, yo, repeat from * (multiple of 2 sts).
• Round 10: *K2, [yo, k1] twice, repeat from * (multiple of 6 sts).
• Round 14: *K3, yo, k1, yo, k2, repeat from * (multiple of 8 sts).
• Round 18: *K4, yo, k1, yo, k3, repeat from * (multiple of 10 sts).
• Round 22: *K5, yo, k1, yo, k4, repeat from * (multiple of 12 sts).
• Round 26: *K6, yo, k1, yo, k5, repeat from * (multiple of 14 sts).
• Round 30: *K7, yo, k1, yo, k6, repeat from * (multiple of 16 sts).
• Round 34: *K8, yo, k1, yo, k7, repeat from * (multiple of 18 sts).
• Round 38: *K9, yo, k1, yo, k8, repeat from * (multiple of 20 sts).