Shown with a cast-on count of 0 stitches.  

• Row 0 (RS): CO 39 sts (39 sts).
• Rows 1, 5, 9, and 13 (RS): P2, k8, p2, k15, p2, k8, p2.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: K2, p8, k2, p15, k2, p8, k2.
• Row 3: P2, 2/2 RC, 2/2 LC, p2, k3, 3/3 LC, 3/3 LC, p2, 2/2 RC, 2/2 LC, p2.
• Row 7: P2, 2/2 RC, 2/2 LC, p2, 3/3 RC, 3/3 RC, k3, p2, 2/2 RC, 2/2 LC, p2.
• Row 11: P2, 2/2 LC, 2/2 RC, p2, k3, 3/3 LC, 3/3 LC, p2, 2/2 LC, 2/2 RC, p2.
• Row 15: P2, 2/2 LC, 2/2 RC, p2, 3/3 RC, 3/3 RC, k3, p2, 2/2 LC, 2/2 RC, p2.