Edit: Here are the expanded-rows directions:

Row 1 (RS): K3tog, k18, [yo, k1] 3 times, yo, k18, sl1-k2tog-psso.
Row 2: Purl.
Row 3: Knit.
Row 4: [K3, p3] 7 times, k3.
Row 5: [P3, k3] 7 times, p3.
Row 6: [K3, p3] 7 times, k3.
Row 7: Sssp, p18, [yo, p1] 3 times, yo, p18, p3tog.
Row 8: Knit.
Row 9: Purl.
Row 10: 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.
Row 12: P1, [k3, p3] 3 times, k3, p1, k3, [p3, k3] 3 times, p1.
Row 13: K3tog, k18, [yo, k1] 3 times, yo, k18, sl1-k2tog-psso.
Row 14: Purl.
Row 15: Knit.
Row 16: P2, [k3, p3] 3 times, k5, [p3, k3] 3 times, p2.
Row 17: K2, [p3, k3] 3 times, p5, [k3, p3] 3 times, k2.
Row 18: P2, [k3, p3] 3 times, k5, [p3, k3] 3 times, p2.
Row 19: Sssp, p18, [yo, p1] 3 times, yo, p18, p3tog.
Row 20: Knit.
Row 21: Purl.
Row 22: [P3, k3] 7 times, p3.
Row 23: [K3, p3] 7 times, k3.
Row 24: [P3, k3] 7 times, p3.
Row 25: K3tog, k18, [yo, k1] 3 times, yo, k18, sl1-k2tog-psso.
Row 26: Purl.
Row 27: Knit.
Row 28: 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.
Row 30: K1, [p3, k3] 3 times, p3, k1, p3, [k3, p3] 3 times, k1.
Row 31: Sssp, p18, [yo, p1] 3 times, yo, p18, p3tog.
Row 32: Knit.
Row 33: Purl.
Row 34: K2, [p3, k3] 3 times, p5, [k3, p3] 3 times, k2.
Row 35: P2, [k3, p3] 3 times, k5, [p3, k3] 3 times, p2.
Row 36: K2, [p3, k3] 3 times, p5, [k3, p3] 3 times, k2.

Version 3: I wanted to figure out if expanding the rows would make the pattern easier to follow. It's part of the pattern's interest to me, and the basis for being able to use this pattern with a half-twist to the graft, that each row is re-used on the other side. It makes for a very compact chart. If each row of symbols in the chart represents a row in a reversible pattern, then it stands to reason that the chart-row can be used twice, once on each side of the fabric. So the chart ends up having row numbers on each side of each row, representing how each line of symbols represents a wrong-side and a right-side row. This chart requires 36 rows of symbols, but if pattern-row numbers are allowed on each side of the chart-row, then the chart only requires 18 rows of symbols, with each row doing double-duty as pattern rows.

For written directions, though, having to weave back and forth among lines of the written pattern becomes tiresome.

Version 2: I made the repeated stitch operations (do x three times) easier to follow, more "knitterly." I was writing down this kind of repeats based on the preliminary chart that I did, where the repeat bars are continuous top-to-bottom. The stitch-maps final chart is the same.

Version 1: 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.

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