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There is an error on step 5, I fix the error later in the video - luckily, it doesn't break everything, it just needed a minor fix.

- [Narrator] So now let's say for our sake I came across this tree and I made a remove 25. So we're kind of in an interesting position ...

This would go from being ZYX... with the necessary trees everywhere, to XYZ. So in our example here of 35, 50, 75, again we ...