Shown with a cast-on count of 8 stitches.  

• Rows 1, 3, 9, 13, 15, and 17 (RS): Knit.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Row 5: *Kfb, repeat from * (16 sts).
• Row 7: *Kfb, k1, repeat from * (24 sts).
• Row 11: *K1, kfb, k1, repeat from * (32 sts).
• Row 19: K2tog, knit to last 2 sts, k2tog (30 sts).
• Row 21: K2tog, k6, [k2tog, k2] 4 times, k4, k2tog (24 sts).
• Row 22: K2tog, knit to last 2 sts, k2tog (22 sts).
• Row 23: K2tog, k4, [k2tog, k1] 4 times, k2, k2tog (16 sts).
• Row 24: K2tog, knit to last 2 sts, k2tog (14 sts).
• Row 25: K2tog, k1, k2tog, k2tog, k2tog, k2tog, k1, k2tog (8 sts).