Shown with a cast-on count of 0 stitches.  

• Row 0 (RS): CO 80 sts (80 sts).
• Rows 1-10 (RS): *K2, p2, repeat from *.
• Row 11 (RS): K2, [M1R, k4] 19 times, M1R, k2 (100 sts).
• Rows 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36 (RS): K100.
• Rows 13, 17, 21, 25, 29, 33, 37, 41, 45, and 49 (RS): *Sl1 wyib, k1, repeat from *.
• Rows 15, 19, 23, 27, 31, 35, 39, 43, 47, and 51 (RS): *K1, sl1 wyib, repeat from *.
• Row 38 (RS): K2, [k2tog, k3] 19 times, k2tog, k1 (80 sts).
• Row 40 (RS): K80.
• Row 42 (RS): K1, [k2tog, k2] 19 times, k2tog, k1 (60 sts).
• Row 44 (RS): K60.
• Row 46 (RS): K1, [k2tog, k1] 19 times, k2tog (40 sts).
• Row 48 (RS): K40.
• Row 50 (RS): [K2tog] 20 times (20 sts).
• Row 52 (RS): [K2tog] 10 times (10 sts).