Shown with a cast-on count of 2 stitches.  

• Rounds 0, 2, 4, 6, 8, 10, 12, 14, 16, 18-21, 23-25, 27, 29, 31, 33, 35, 37, 39, and 41: Knit.
• Round 1: *Yo, k1, repeat from * (multiple of 2 sts).
• Round 3: *Yo, k2, repeat from * (multiple of 3 sts).
• Round 5: *Yo, k3, repeat from * (multiple of 4 sts).
• Round 7: *Yo, k4, repeat from * (multiple of 5 sts).
• Round 9: *Yo, k5, repeat from * (multiple of 6 sts).
• Round 11: *Yo, k1, yo, k5, repeat from * (multiple of 8 sts).
• Round 13: *[Yo, k3] twice, k2tog, repeat from * (multiple of 9 sts).
• Round 15: *Yo, k2tog, k1, k2tog, yo, k2, k2tog, repeat from * (multiple of 8 sts).
• Round 17: *Yo, k1, yo, sl1-k2tog-psso, repeat from *.
• Round 22: *Yo, k2tog, repeat from *.
• Round 26: *Yo, k1, yo, k2tog, k1, repeat from * (multiple of 5 sts).
• Round 28: *[K1, yo] twice, k2tog, k1, repeat from * (multiple of 6 sts).
• Round 30: *K2, yo, k1, yo, k2tog, k1, repeat from * (multiple of 7 sts).
• Round 32: *K3, yo, k1, yo, k2tog, k1, repeat from * (multiple of 8 sts).
• Round 34: *K4, yo, k1, yo, k2tog, k1, repeat from * (multiple of 9 sts).
• Round 36: *K5, yo, k1, yo, k2tog, k1, repeat from * (multiple of 10 sts).
• Round 38: *K6, yo, k1, yo, k2tog, k1, repeat from * (multiple of 11 sts).
• Round 40: *K2, yo, k4, sl1-k2tog-psso, k2, repeat from * (multiple of 10 sts).