stressful subject

In the description of this puzzle I can not find a single word that says that it is not allowed to find a letter again in the search string that was already found earlier in one of the red words and is so intermingling the correct word structure. Example: He loves peace. The "e" in loves has already been detected in He and as the "l" in loves is one step further the e in loves is at the wrong place to build the word "Help". Yes I understand this but please explain where I find in the description that it is making the line not stressful if the rest of the letters of the word HELP can be found. Can't see it. So my solution was removed because this was not obvious.