Shown with a cast-on count of 6 stitches.  

• Rounds 19-23: K6.
• Round 24: [Kfb, k2] twice (8 sts).
• Rounds 25-29, 31-35, 37-41, 43-47, 49-53, and 55-59: Knit.
• Round 30: [Kfb, k3] twice (10 sts).
• Round 36: [Kfb, k4] twice (12 sts).
• Round 42: [Kfb, k5] twice (14 sts).
• Round 48: [Kfb, k6] twice (16 sts).
• Round 54: [Kfb, k7] twice (18 sts).
• Round 60: [Kfb, k8] twice (20 sts).