Shown with a cast-on count of 51 stitches.  

• Rows 1, 3, 5, 50-51, and 53 (RS): [P1, k1] 25 times, p1.
• Rows 2, 4, 52, and 54: [P1, k1] 25 times, p1.
• Rows 6, 8, 10, 12, 14, 18, 20, 22, 28, 30, and 38 (RS): [P1, k1] twice, [p1, kfb, k3, ssk, p1, k2tog, k3, kfb] 3 times, p1, [k1, p1] twice.
• Rows 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, and 49: [P1, k1] twice, purl to last 4 sts, [k1, p1] twice.
• Rows 16, 24, 32, 36, 40, 44, and 48: [P1, k1] twice, *sl1 wyif, k1, repeat from * to last 5 sts, p1, [k1, p1] twice.
• Rows 26, 34, 42, and 46: [P1, k1] twice, p1, *sl1 wyif, k1, repeat from * to last 4 sts, [k1, p1] twice.