Reusing your own words

We can also repeat ourselves for emphasis, giving the same information more than once, and presenting it afresh each time, focusing on it anew:

It's true, | it's true!
I can't accept it, I just can't accept it.

This may involve reaccenting the same words, as in the example just given, or reaccenting the same ideas while expressing them differently, e.g. by using synonyms:

I hate her, | I detest her, I can't stand her.

We may also need to reaccent words already used in cases such as

First things first.
Surprise, surprise!
There are also several idiomatic expressions, with the typical structure X and X or X-preposition-X, in which a repeated word is accented on each occasion. Examples include more and more, hours and hours, again and again, (to meet someone) face to face, from day to day

The 'tremors | got worse and 'worse.
We 'walked | for miles and 'miles.
The noise get louder and 'louder.
Profits in'creased | from year to 'year. | They just grew and grew and 'grew
Some instances of a speaker accenting repeated words do not seem to have a logical explanation, and must be regarded as idiomatic. For example, we might complain about a speaker's voice quality or intonation by using the cliche:

It's not what he ⤵⤴said, | it's the way that he said it.
Logically, you would expect contrastive focus on what and way rather than the repeated focusing on said.

On saying goodbye we can use the idiomatic expression:

I see you when I 'see you.