Shown with a cast-on count of 13 stitches.  

• Rows 1 and 25 (RS): Knit.
• Rows 2, 4, 6, 8, 18, 20, 22, 24, and 26: Purl.
• Row 3: 3/3 RC, k1, 3/3 LC.
• Row 5: K2tog, k4, yo, k1, yo, k4, ssk.
• Row 7: K2tog, [k3, yo] twice, k3, ssk.
• Row 9: K2tog, k2, yo, [k1, 1-to-5 inc] twice, k1, yo, k2, ssk (21 sts).
• Row 10: P5, p5tog, p1, p5tog, p5 (13 sts).
• Row 11: K2tog, k1, yo, k1, 1-to-5 inc, k3, 1-to-5 inc, k1, yo, k1, ssk (21 sts).
• Row 12: P4, p5tog, p3, p5tog, p4 (13 sts).
• Row 13: K2tog, yo, k1, 1-to-5 inc, k5, 1-to-5 inc, k1, yo, ssk (21 sts).
• Row 14: P3, p5tog, p5, p5tog, p3 (13 sts).
• Row 15: K2, 1-to-5 inc, k2, k2tog, yo, k3, 1-to-5 inc, k2 (21 sts).
• Row 16: P2, p5tog, p7, p5tog, p2 (13 sts).
• Rows 17 and 21: K4, [k2tog, yo] twice, k5.
• Row 19: K3, [k2tog, yo] 3 times, k4.
• Row 23: K5, k2tog, yo, k6.