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

public class Solution {

    static char[] co = new char[26];
    static int N = (int)Math.pow(10,9)+7;
    static void initialize(String s) {
        // This function is called once before all queries.
    }

    static int answerQuery(String s,int l, int r) {
        // Return the answer for this query modulo 1000000007.
        for(int i =l;i<=r;i++){
            co[s.charAt(i)-'a']++;
        }
        
        long sum = 0;
        for(int i=0;i<26;i++){
            if(co[i]%2==0){
                sum+=co[i];
            }
        }
        return (int)(sum%N);
    }

    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();
            int result = answerQuery(s,l, r);
            System.out.println(result);
        }
        in.close();
    }
}