/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
/* 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 line = "21Sid1\nOrdernr Skip everything upto new line\nE17222\nBy\nSeller";
		Pattern pattern = Pattern.compile("Ordernr.*[\r\n]+(.*)");
		Matcher matcher = pattern.matcher(line);
		if (matcher.find( )) {
			System.out.println("group 1: " + matcher.group(1));
		}else{
			System.out.println("No match found");
		}
	}
}

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