Shown with a cast-on count of 71 stitches.  

• Rounds 1, 4, 7, and 10: K2, *p1, k1, repeat from * to last st, k1.
• Rounds 2, 5, and 8: [K1, p1] 6 times, *(k1, p1, k1) in next st, p1, k1, p1, (k1, p1, k1) in next st, p1, [k1, p1] 11 times, repeat from * to last 3 sts, (k1, p1, k1) in next st, p1, k1 (multiple of 32 sts, plus 17).
• Rounds 3, 6, and 9: K1, p1, sl2-k1-p2sso, *p1, [k1, p1] 11 times, sl2-k1-p2sso, p1, k1, p1, sl2-k1-p2sso, repeat from * to last 12 sts, [p1, k1] 6 times (multiple of 28 sts, plus 15).
• Repeat rounds 2-10.