import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    static void initialize(String str) {
     
        int max = 1;  
 
    int start = 0;
    int len = str.length();
 
    int low, high;
 
   
    for (int i = 1; i < len; ++i)
    {
          
        low = i - 1;
        high = i;
        while (low >= 0 && high < len && str.charAt(low) == str.charAt(high))
        {
            if (high - low + 1 > max)
            {
                start = low;
                max = high - low + 1;
            }
            --low;
            ++high;
        }
 
      
        low = i - 1;
        high = i + 1;
        while (low >= 0 && high < len && str.charAt(low) == str.charAt(high))
        {
            if (high - low + 1 > max)
            {
                start = low;
                max = high - low + 1;
            }
            --low;
            ++high;
        }
    }
        for( int i = start; i <= start+max-1; ++i )
        System.out.print(2);

    }

    /*static int answerQuery(int l, int r) {
        // Return the answer for this query modulo 1000000007.
    }*/

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.next();
        initialize(s);
        int q = in.nextInt();
        for(int a0 = 0; a0 < q; a0++){
            int l = in.nextInt();
            int r = in.nextInt();
    initialize(s);

        }
        in.close();
    }
}