Shown with a cast-on count of 9 stitches.  

• Row 1 (RS): Kfb, kfb, k2, yo, ssk, k1, kfb, kfb (13 sts).
• Row 2: K3, p7, k3.
• Row 3: Kfb, kfb, k1, ssk, yo, ssk, yo, k1, yo, k2tog, k1, kfb, kfb (17 sts).
• Row 4: K3, p11, k3.
• Row 5: Kfb, kfb, k1, ssk, yo, k3, yo, k2tog, k2, yo, k2tog, k1, kfb, kfb (21 sts).
• Row 6: K3, p15, k3.
• Row 7: Kfb, kfb, k1, ssk, yo, ssk, yo, k2, ssk, yo, k3, yo, k2tog, yo, k2tog, k1, kfb, kfb (25 sts).
• Row 8: K3, p19, k3.
• Row 9: Kfb, kfb, k1, ssk, yo, k7, yo, k2tog, k6, yo, k2tog, k1, kfb, kfb (29 sts).
• Row 10: K3, p23, k3.
• Row 11: Kfb, kfb, k1, [ssk, yo] 3 times, k2, [ssk, yo] twice, k1, yo, k2tog, k2, [yo, k2tog] 3 times, k1, kfb, kfb (33 sts).
• Row 12: K3, p27, k3.