2/1/2 RPC = Cable Twist: Slip next 3 sts to cable needle and hold to back of work, k2, slip last st from cable needle to left needle, p1, k remaining 2 sts from cable needle.

Shown with a cast-on count of 27 stitches.   Getting chart...

  • Rounds 1-4 and 6-8: K1, p1, [k2, p1] 8 times, k1.
  • Round 5: [K1, p1, 2/1/2 RPC, p1, k1] 3 times.