/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String string = "Ты ду_рак или Дур_ак чудак?";
	    String pattern = "(?iU)[дd][\\W_]?[уy][\\W_]?[рpr][\\W_]?[аa][\\W_]?[кk]";
	    String p ="***";
	    String newString = string.replaceAll(pattern, p);
	    System.out.println(newString);
	}
}

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