Shown with a cast-on count of 79 stitches.  

• Rows 1, 7, 13, 19, 25, and 31 (RS): [K1, p1] 3 times, k3, *p1, k5, repeat from * to last 10 sts, p1, k3, [p1, k1] 3 times.
• Rows 2, 6, 8, 12, 14, 18, 20, 24, 26, and 30: [K1, p1] twice, k2, p2, *k1, p1, k1, p3, repeat from * to last 11 sts, k1, p1, k1, p2, k2, [p1, k1] twice.
• Rows 3, 5, 9, 11, 15, 17, 21, 23, 27, and 29: [K1, p1] 3 times, k1, p1, k1, *k2, [p1, k1] twice, repeat from * to last 10 sts, k2, [p1, k1] 4 times.
• Rows 4, 10, 16, 22, and 28: [K1, p1] twice, k3, *p5, k1, repeat from * to last 6 sts, k2, [p1, k1] twice.
• Rows 32 and 36: [K1, p1] twice, k2, p67, k2, [p1, k1] twice.
• Rows 33 and 37: [K1, p1] twice, k1, p69, k1, [p1, k1] twice.
• Row 34: [K1, p1] twice, k71, [p1, k1] twice.
• Row 35: [K1, p1] 3 times, k67, [p1, k1] 3 times.
• Row 38: [K1, p1] twice, k35, M1L, k36, [p1, k1] twice (80 sts).