Shown with a cast-on count of 42 stitches.  

• Rows 1, 3, 5, 7, 9, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 35, 37, 39, 41, and 43 (RS): Sl1 wyib, *brSl, k1, repeat from * to last st, p1.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24, 26, 28, 30, 32, 34, 36, 38, 40, and 42: Sl1 wyib, *brSl, k1, repeat from * to last st, p1.
• Rows 11 and 33: Sl1 wyib, *4/4 LC, [brSl, k1] 4 times, repeat from * to last 9 sts, 4/4 LC, p1.
• Row 22: Sl1 wyib, [brSl, k1] 4 times, *4/4 LC, [brSl, k1] 4 times, repeat from * to last st, p1.
• Repeat rows 1-22.