Shown with a cast-on count of 16 stitches.  

• Rows 1, 3, 7, 11, and 15 (RS): K1, *brSl, k1, repeat from * to last st, k1.
• Rows 2, 4, 8, 12, and 16: Sl2 wyif, *k1, brSl, repeat from *.
• Rows 5, 9, 13, and 17: K1, *brSl, k1, repeat from * to last 5 sts, k2tog, brSl, k2 (multiple of 2 sts, plus 5).
• Rows 6, 10, 14, and 18: Sl2 wyif, k2tog, *brSl, k1, repeat from * to last st, brSl (multiple of 2 sts, plus 4).