Shown with a cast-on count of 58 stitches.  

• Rows 1, 3, 5, 9, 11, 15, 17, 19, 21, 23, 25, 29, 31, 35, 37, and 39 (RS): K10, p2, *k16, p2, repeat from * to last 10 sts, k10.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, and 40: P10, *k2, p16, repeat from * to last 12 sts, k2, p10.
• Rows 7 and 13: K4, 3/3 RC, p2, *k10, 3/3 RC, p2, repeat from * to last 10 sts, k10.
• Rows 27 and 33: K10, p2, *3/3 LC, k10, p2, repeat from * to last 10 sts, 3/3 LC, k4.