Shown with a cast-on count of 3 stitches.  

• Round 1: [Kfb] 3 times (6 sts).
• Round 2: [Kfb] 6 times (12 sts).
• Rounds 3, 5, 7, 9-26, 28-29, 31, and 33: Knit.
• Round 4: [Kfb, k2] 4 times (16 sts).
• Round 6: [Kfb, k3] 4 times (20 sts).
• Round 8: [Kfb, k4] 4 times (24 sts).
• Round 27: [K2tog, k4] 4 times (20 sts).
• Round 30: [K2tog, k3] 4 times (16 sts).
• Round 32: [K2tog, k2] 4 times (12 sts).
• Round 34: [K2tog, k1] 4 times (8 sts).
• Round 35: [K2tog] 4 times (4 sts).