#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <cstring>
#include <cctype>
#include <cmath>
#include <stack>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <list>
#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <math.h>
#include <bitset>
#include <iterator>
#include <iomanip>
#include <sstream>
#define INF 2000000000
using namespace std;
int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
#define sym cout<<"---------"<<endl;
#define ll long long
#define PL pair<long long, long long>
#define P pair<int,int>
#define mk make_pair
#define en endl
#define WHITE 0
#define BLACK 2
#define GRAY 1
#define RE return 0
#define int ll


signed main(){
  int n,m;
  cin>>n>>m;
  char c[55][55];
  for(int i=0; i<n; i++)for(int j=0; j<m; j++) cin>>c[i][j];
  for(int i=0; i<n; i++){
    for(int j=0; j<m-3; j++){
      char ch;
      cin>>ch;
      if(ch=='L'){
        if(c[i][j+1]=='O'&&c[i][j+2]=='V'&&c[i][j+3]=='E'){
          cout<<"YES"<<en;
          RE;
        }
      }
    }
  }
  cout<<"NO"<<en;
}