Shown with a cast-on count of 48 stitches.  

• Rows 1, 3, 5, 7, 11, 13, 15, and 17 (RS): P2, [k4, p1] 8 times, k4, p2.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, and 18: K2, [p4, k1] 8 times, p4, k2.
• Row 9: P48.
• Row 19: P2, k44, p2.
• Row 20: K2, p44, k2.
• Row 21: P2, k10, M1R, k4, M1L, k16, M1R, k4, M1L, k10, p2 (52 sts).
• Row 22: K2, p48, k2.
• Row 23: P2, k10, M1R, k6, M1L, k16, M1R, k6, M1L, k10, p2 (56 sts).