Shown with a cast-on count of 39 stitches.  

• Rows 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, and 25 (WS): Purl.
• Rows 2 and 4: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k4, kfb, k2tog, yo, k2, k2tog, k1.
• Row 6: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k3, ssk, k2tog, yo, k3, yo, k2.
• Row 8: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k2, ssk, k2tog, yo, k3, k2tog, k1 (37 sts).
• Row 10: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, k1, ssk, k2tog, yo, k2, k2tog, k1 (35 sts).
• Row 12: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k2tog, yo, k1, k2tog, k1 (33 sts).
• Row 14: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k5, ssk, k2tog, yo, k1, yo, k2.
• Row 16: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k4, ssk, k2tog, yo, k2, yo, k2.
• Row 18: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k3, ssk, k2tog, yo, k3, yo, k2.
• Row 20: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k2, ssk, k2tog, yo, k3, k2tog, k1 (31 sts).
• Row 22: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, ssk, k2tog, yo, k2, k2tog, k1 (29 sts).
• Row 24: Sl1 wyif, k4, ssk, k3, yo, k1, yo, k3, k2tog, ssk, k3, yo, k1, k2tog, yo, k1, k2tog, k2 (28 sts).