Shown with a cast-on count of 48 stitches.  

• Rows 1, 3, 5, 7, 9, and 11 (RS): Knit.
• Rows 2, 4, 6, 8, 10, and 12: Purl.
• Row 13: K15, k16, p2, k15.
• Row 14: K14, k16, p4, k14.
• Row 15: K14, k16, p4, k14.
• Row 16: K13, k16, p6, k13.
• Row 17: K13, k16, p6, k13.
• Row 18: K12, k16, p8, k12.
• Row 19: K11, k16, p10, k11.
• Row 20: K11, k16, p10, k11.
• Row 21: K10, k16, p12, k10.
• Row 22: K10, k16, p12, k10.
• Row 23: K9, k16, p14, k9.
• Row 24: K8, k16, p16, k8.