regex for search and replace -

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I am searching one and changing it and all the characters need to change which no a comma "" .

How do I search for all the letters in any order?

For example: 

  string, like this, will be

...: 

  to replace, replace, replace,

any non-comma Matching the characters of: [^,] +

In such a perl: s / [^,] + / replace / g


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