Shown with a cast-on count of 40 stitches.  

• Row 1 (RS): K1, *k8, sl2-k1-p2sso, k8, repeat from * to last st, k1 (multiple of 17 sts, plus 2).
• Rows 2, 4, 6, 8, and 10: Purl.
• Row 3: K1, *k7, sl2-k1-p2sso, k7, repeat from * to last st, k1 (multiple of 15 sts, plus 2).
• Row 5: K1, *k6, sl2-k1-p2sso, k6, repeat from * to last st, k1 (multiple of 13 sts, plus 2).
• Row 7: K1, *k5, sl2-k1-p2sso, k5, repeat from * to last st, k1 (multiple of 11 sts, plus 2).
• Row 9: K1, *yo, [k1, yo] 4 times, sl2-k1-p2sso, yo, [k1, yo] 4 times, repeat from * to last st, k1 (multiple of 19 sts, plus 2).