Wavy Welt Cowl Pattern

I wanted to use the wavy welt pattern to make a cowl. I also wanted to have the welts make a chevron. The stitch-pattern itself is reversible, but adding increases in the middle and decreases at the edges complicated the reversibility when it came time to use the pattern as the basis for a Möbius cowl. I finally figured it out. I hope.

Shown with a cast-on count of 45 stitches.   Getting chart...

  • Rows 1, 13, and 25 (RS): K3tog, k18, yo, k1, yo, k1, yo, k1, yo, k18, sl1-k2tog-psso.
  • Rows 2, 14, and 26: Purl.
  • Rows 3, 15, and 27: Knit.
  • Rows 4 and 6: K1, [k2, p3, k1] 3 times, k2, p3, k2, [k1, p3, k2] 3 times, k1.
  • Row 5: P1, [p2, k3, p1] 3 times, p2, k3, p2, [p1, k3, p2] 3 times, p1.
  • Rows 7, 19, and 31: Sssp, p18, yo, p1, yo, p1, yo, p1, yo, p18, p3tog.
  • Rows 8, 20, and 32: Knit.
  • Rows 9, 21, and 33: Purl.
  • Rows 10 and 12: P1, [k3, p3] 3 times, k3, p1, k3, [p3, k3] 3 times, p1.
  • Row 11: K1, [p3, k3] 3 times, p3, k1, p3, [k3, p3] 3 times, k1.
  • Rows 16 and 18: P1, [p1, k3, p2] 3 times, p1, k5, p1, [p2, k3, p1] 3 times, p1.
  • Row 17: K1, [k1, p3, k2] 3 times, k1, p5, k1, [k2, p3, k1] 3 times, k1.
  • Rows 22 and 24: P1, [p2, k3, p1] 3 times, p2, k3, p2, [p1, k3, p2] 3 times, p1.
  • Row 23: K1, [k2, p3, k1] 3 times, k2, p3, k2, [k1, p3, k2] 3 times, k1.
  • Rows 28 and 30: K1, [p3, k3] 3 times, p3, k1, p3, [k3, p3] 3 times, k1.
  • Row 29: P1, [k3, p3] 3 times, k3, p1, k3, [p3, k3] 3 times, p1.
  • Rows 34 and 36: K1, [k1, p3, k2] 3 times, k1, p5, k1, [k2, p3, k1] 3 times, k1.
  • Row 35: P1, [p1, k3, p2] 3 times, p1, k5, p1, [p2, k3, p1] 3 times, p1.