You are given a string s consisting of lowercase Latin letters and q queries for this string.

Recall that the substring s[l; r] of the string s is the string s_l s_{l + 1} ... s_r. For example, the substrings of "codeforces" are "code", "force", "f", "for", but not "coder" and "top".

There are two types of queries: 

  * 1~ pos~ c (1 ≤ pos ≤ |s|, c is lowercase Latin letter): replace s_{pos} with c (set s_{pos} := c); 
  * 2~ l~ r (1 ≤ l ≤ r ≤ |s|): calculate the number of distinct characters in the substring s[l; r]. 

Input

The first line of the input contains one string s consisting of no more than 10^5 lowercase Latin letters.

The second line of the input contains one integer q (1 ≤ q ≤ 10^5) — the number of queries.

The next q lines contain queries, one per line. Each query is given in the format described in the problem statement. It is guaranteed that there is at least one query of the second type.

Output

For each query of the second type print the answer for it — the number of distinct characters in the required substring in this query.

Examples

Input


abacaba
5
2 1 4
1 4 b
1 5 b
2 4 6
2 1 7


Output


3
1
2


Input


dfcbbcfeeedbaea
15
1 6 e
1 4 b
2 6 14
1 7 b
1 12 c
2 6 8
2 1 6
1 7 c
1 2 f
1 10 a
2 7 9
1 10 a
1 14 b
1 1 f
2 1 11


Output


5
2
5
2
6
import java.util.*;
// import java.lang.*;
import java.io.*;

//           THIS TEMPLATE MADE BY AKSH BANSAL.

public class Solution {
    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader() {
            br = new BufferedReader(new InputStreamReader(System.in));
        }

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }
    private static boolean[] isPrime;
    private static void primes(){
        int num = (int)1e6; // PRIMES FROM 1 TO NUM
        isPrime = new boolean[num];
     
        for (int i = 2; i< isPrime.length; i++) {
           isPrime[i] = true;
        }
        for (int i = 2; i< Math.sqrt(num); i++) {
           if(isPrime[i] == true) {
              for(int j = (i*i); j<num; j = j+i) {
                 isPrime[j] = false;
              }
           }
        }
    }
    static void sort(int a[]){
        ArrayList<Integer> arr=new ArrayList<>();
        for(int i=0;i<a.length;i++)
        arr.add(a[i]);
        Collections.sort(arr);
        for(int i=0;i<a.length;i++)
        a[i]=arr.get(i);
        
    }
    static void sort(long a[]){
        ArrayList<Long> arr=new ArrayList<>();
        for(int i=0;i<a.length;i++)
        arr.add(a[i]);
        Collections.sort(arr);
        for(int i=0;i<a.length;i++)
        a[i]=arr.get(i);
        
    }
    private static long gcd(long a, long b){
        if(b==0)return a;
        return gcd(b,a%b);
    }
    private static long pow(long x,long y){
        if(y==0)return 1;
        long temp = pow(x, y/2);
        if(y%2==1){
            return x*temp*temp;
        }
        else{
            return temp*temp;
        }
    }
    // static ArrayList<Integer>[] adj;
    // static void getAdj(int n,int q, FastReader sc){
    //     adj = new ArrayList[n+1];
    //     for(int i=1;i<=n;i++){
    //         adj[i] = new ArrayList<>();
    //     }
    //     for(int i=0;i<q;i++){
    //         int a = sc.nextInt();
    //         int b = sc.nextInt();

    //         adj[a].add(b);
    //         adj[b].add(a);
    //     }
    // }
    static PrintWriter out;
    static FastReader sc ;
    public static void main(String[] args) throws IOException {
        sc = new FastReader();
        out = new PrintWriter(System.out);
        // primes();
        // ________________________________

        // int t = sc.nextInt();
        // StringBuilder output = new StringBuilder();

        // while (t-- > 0) {

        //     output.append(solver()).append("\n");
        // }

        // out.println(output);
        // _______________________________

        String s = sc.nextLine();
        int q = sc.nextInt();
        // out.println();
        solver(s, q);
        // ________________________________
        out.flush();
    }

    public static void solver(String str, int q) {
        StringBuilder s = new StringBuilder(str);
        TreeSet<Integer>[] arr = new TreeSet[26];
        for(int i=0;i<26;i++){
            arr[i] = new TreeSet<>();
        }
        int n = s.length();
        for(int i=0;i<n;i++){
            int c = s.charAt(i)-'a';
            arr[c].add(i);
        }
        while(q-->0){
            String[] query = sc.nextLine().split(" ");
            if(query[0].equals("1")){
                int pos = Integer.parseInt(query[1])-1;
                int c = query[2].charAt(0)-'a';
                int prev = s.charAt(pos)-'a';
                arr[prev].remove(pos);
                arr[c].add(pos);
                s.setCharAt(pos, query[2].charAt(0));
                // if(pos==6){
                //     System.out.println("__"+ arr[prev]);
                //     System.out.println("__"+ arr[c]);
                //     System.out.println("__" );
                // }
            }
            else{
                int l = Integer.parseInt(query[1])-1;
                int r = Integer.parseInt(query[2])-1;
                int res = 0;
                for(int i=0;i<26;i++){
                    if(arr[i].ceiling(l)!=null && arr[i].ceiling(l)<=r){
                        // System.out.println("__"+ i);
                        res++;
                    }
                }
                out.println(res);
            }
        }
    }
}