Shown with a cast-on count of 4 stitches.  

• Row 1 (RS): K4.
• Row 2: K2, kfb, k1 (5 sts).
• Row 3: K1, kfb, k3 (6 sts).
• Row 4: K4, kfb, k1 (7 sts).
• Row 5: K1, kfb, k5 (8 sts).
• Row 6: K6, kfb, k1 (9 sts).
• Row 7: K1, kfb, k7 (10 sts).
• Row 8: K8, kfb, k1 (11 sts).
• Row 9: K1, kfb, k7, k2tog.
• Row 10: K9, kfb, k1 (12 sts).
• Row 11: K1, kfb, k10 (13 sts).
• Row 12: K11, kfb, k1 (14 sts).
• Row 13: K1, kfb, k10, k2tog.
• Row 14: Knit to last 2 sts, kfb, k1 (15 sts).
• Row 15: K1, kfb, knit (16 sts).
• Row 16: Knit to last 2 sts, kfb, k1 (17 sts).
• Row 17: K1, kfb, k5, k2tog, yo, k2tog, yo, knit to last 2 sts, k2tog.
• Row 18: K6, yo, p2tog, yo, p2tog, knit to last 2 sts, kfb, k1 (18 sts).
• Row 19: K1, kfb, k5, k2tog, yo, yo, k2tog, knit (19 sts).
• Row 20: K7, yo, p2tog, k1, yo, p2tog, knit to last 2 sts, kfb, k1 (20 sts).
• Row 21: K1, kfb, k5, k2tog, yo, k1, yo, k2tog, knit to last 2 sts, k2tog.
• Row 22: K7, yo, p2tog, k2, yo, p2tog, knit to last 2 sts, kfb, k1 (21 sts).
• Row 23: K1, kfb, k5, k2tog, yo, M1R, ssk, yo, k2tog, knit (22 sts).
• Row 24: K8, yo, p2tog, k3, yo, p2tog, knit to last 2 sts, kfb, k1 (23 sts).
• Row 25: K1, kfb, k5, k2tog, yo, M1R, ssk, k1, yo, k2tog, knit to last 2 sts, k2tog.
• Row 26: K8, yo, p2tog, k4, yo, p2tog, knit to last 2 sts, kfb, k1 (24 sts).
• Row 27: K1, kfb, k5, k2tog, yo, M1R, ssk, M1R, ssk, yo, k2tog, knit (25 sts).
• Row 28: K9, yo, p2tog, k5, yo, p2tog, knit to last 2 sts, kfb, k1 (26 sts).
• Row 29: K1, kfb, k5, k2tog, yo, M1R, ssk, M1R, ssk, k1, yo, k2tog, knit to last 2 sts, k2tog.