import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String block = "somelongpattern[0-9]";
		String final_regex = String.format("^(%1$s)([,; ]+%1$s)*$",block);
		System.out.println(final_regex);
	}
}