@nicolecox I assume you want the same order like in the original pattern and you do double triangle ends. If thats the case you just do the strings at one side of the triangle in the order you want (they'll appear in the same order in the pattern) and the other edge is black. The second triangle is mirrored.
@nicolecox no, you're not missing anything. In some of the older patterns the strings at the beginning and end of a pattern are in a different order but you still have to start again from row 1 after you did the last row. You do the same knots but with different colours.
You can see that the outer black strings and the purple strings form a "w" shape. This "w" shape repeats over and over again with all strings just like the "v" shape repeats in a regulat chevron.