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.io.*;

public class Main {
	static long mod = 1000000007;
	static int INF = 1000000000;
 	public static void main(String[] args){
		FastScanner scanner = new FastScanner();
		String s = scanner.next();
		int n = s.length();
		int[] c = new int[n];
		for(int i = 0; i < n; i++){
			c[i] = s.charAt(i)-'a';
		}
		int q = scanner.nextInt();
		TreeSet<Integer>[] set = new TreeSet[26];
		for(int i = 0; i < 26; i++){
			set[i] = new TreeSet<Integer>();
		}
		for(int i = 0; i < n; i++){
			set[c[i]].add(i);
		}

		for(int query = 0; query < q; query++){
			int t = scanner.nextInt();
			if(t == 1){
				int pos = scanner.nextInt()-1;
				String xx = scanner.next();
				int x = xx.charAt(0)-'a';
				for(int j = 0; j < 26; j++){
					if(set[j].contains(pos)){
						set[j].remove(pos);
						set[x].add(pos);
					}
				}
			}else if(t == 2){
				int left = scanner.nextInt()-1;
				int right = scanner.nextInt()-1;
				int cnt = 0;
				for(int j = 0; j < 26; j++){
					Integer it = set[j].lower(right+1);
					if(it == null) continue;
					if(it >= left){
						cnt++;
					}
				}
				System.out.println(cnt);
			}
		}
	}
	static class BIT{
			int n;
			int[] bit;
			public BIT(int n){
				this.n = n;
				bit = new int[n+1];
			}
			void add(int idx, int val){
				for(int i = idx+1; i <= n; i += i&(-i)) bit[i-1] += val;
			}
			int sum(int idx){
				int res = 0;
				for(int i = idx+1; i > 0; i -= i&(-i)) res += bit[i-1];
				return res;
			}
			int sum(int begin, int end){
				if(begin == 0) return sum(end);
				return sum(end)-sum(begin-1);
			}
		}
		public static long pow(long x, long n){
	    long ans = 1;
	    while(n > 0){
	      if((n & 1) == 1){
	        ans = ans * x;
	        ans %= mod;
	      }
	      x = x * x % mod;
	      n >>= 1;
	    }
	    return ans;
	  }
	static class Pair implements Comparable<Pair>{
    int first, second;
    Pair(int a, int b){
        first = a;
        second = b;
    }
    @Override
    public boolean equals(Object o){
        if (this == o) return true;
        if (!(o instanceof Pair)) return false;
        Pair p = (Pair) o;
        return first == p.first && second == p.second;
    }
    @Override
    public int compareTo(Pair p){
        return first == p.first ? second - p.second : first - p.first; //firstで昇順にソート
        //return (first == p.first ? second - p.second : first - p.first) * -1; //firstで降順にソート
        //return second == p.second ? first - p.first : second - p.second;//secondで昇順にソート
        //return (second == p.second ? first - p.first : second - p.second)*-1;//secondで降順にソート
		    //return first * 1.0 / second > p.first * 1.0 / p.second ? 1 : -1; // first/secondの昇順にソート
		    //return first * 1.0 / second < p.first * 1.0 / p.second ? 1 : -1; // first/secondの降順にソート
				//return second * 1.0 / first > p.second * 1.0 / p.first ? 1 : -1; // second/firstの昇順にソート
		    //return second * 1.0 / first < p.second * 1.0 / p.first ? 1 : -1; // second/firstの降順にソート
				//return Math.atan2(second, first) > Math.atan2(p.second, p.first) ? 1 : -1; // second/firstの昇順にソート
				//return first + second > p.first + p.second ? 1 : -1; //first+secondの昇順にソート
				//return first + second < p.first + p.second ? 1 : -1; //first+secondの降順にソート
				//return first - second < p.first - p.second ? 1 : -1; //first-secondの降順にソート
		}
  }

	private static class FastScanner {
		private final InputStream in = System.in;
		private final byte[] buffer = new byte[1024];
		private int ptr = 0;
		private int buflen = 0;
		private boolean hasNextByte() {
				if (ptr < buflen) {
						return true;
				}else{
						ptr = 0;
						try {
								buflen = in.read(buffer);
						} catch (IOException e) {
								e.printStackTrace();
						}
						if (buflen <= 0) {
								return false;
						}
				}
				return true;
		}
		private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
		private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
		public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
		public String next() {
				if (!hasNext()) throw new NoSuchElementException();
				StringBuilder sb = new StringBuilder();
				int b = readByte();
				while(isPrintableChar(b)) {
						sb.appendCodePoint(b);
						b = readByte();
				}
				return sb.toString();
		}
		public long nextLong() {
				if (!hasNext()) throw new NoSuchElementException();
				long n = 0;
				boolean minus = false;
				int b = readByte();
				if (b == '-') {
						minus = true;
						b = readByte();
				}
				if (b < '0' || '9' < b) {
						throw new NumberFormatException();
				}
				while(true){
						if ('0' <= b && b <= '9') {
								n *= 10;
								n += b - '0';
						}else if(b == -1 || !isPrintableChar(b)){
								return minus ? -n : n;
						}else{
								throw new NumberFormatException();
						}
						b = readByte();
				}
		}
		public int nextInt() {
				long nl = nextLong();
				if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
				return (int) nl;
		}
		public double nextDouble() { return Double.parseDouble(next());}
	}
}
