JT posts a count. But the point here really concerns the methodology.
It can be a painstaking process to work out the details of how to get there.
If you want to avoid the wrong answers and get closer to the correct one.

So here’s a post that works through “the” methodology.
[There are variants on the rules but most EWers apply most of them in the same way.]

http://studyofcycles.blogspot.com/2017/06/the-us-dollar-index.html