#include <bits/stdc++.h>
using namespace std;

#define loop(i,b,e) for(int i=b;i<=e;i++)
#define reloop(i,e,b) for(int i=e;i>=b;i--)
#define all(x) x.begin(),x.end()
#define pb push_back
#define ll long long
#define pf printf
#define sf scanf

int n,m;
string s;
map<string,int> f;

int main() {
   sf("%d%d",&n,&m);
   loop(i,0,n-1) cin >> s,f[s]++;
   loop(i,1,m) {
      cin >> s;
      if(f[s] != 0)
         f[s] = 0;
   }
   for(auto it = f.begin() ; it != f.end() ; it++) {
      if(it->second != 0)
         cout << it->first << " ";
   }
}