//經過ㄌㄅㄑ的指導發現似乎是hash寫爛後決定再試最後一次OuO
#include <iostream>
#include <cmath>
#include <algorithm>
using namespace std;
#define endl '\n'
#define int long long
int _hash(string str) {
    int result=0, num;
    result += (str[0] - 'A');

    for(int i=1; i<str.length(); i++) {
        result *= 10;
        result += (str[i] - '0');
    }

    return result;
}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, m, target;
    string input;
    cin >> n >> m;
    int data[n];
    for(int i=0; i<n; i++) {
        cin >> input;
        data[i] = _hash(input);
    }
    sort(data, data+n);
    for(int i = 0; i < m; i++) {
        bool ans = 0;
        cin >> input;
        target = _hash(input);
        int L = 0, R = n - 1;
        int M = (L+R)/2;
        while (L <= R) {
            M = (L + R) >> 1;
            if(data[M] == target) {
                ans = 1;
                break;
            }
            else if(data[M] > target) {
                R = M - 1;
            }
            else {
                L = M + 1;
            }
        }
        if(ans) cout << "Yes" << endl;
        else cout << "No" << endl;
    }
    return 0;
}