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


void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}

#define fo(i, n) for(int i=0; i<n; i++)
#define Fo(i, k, n) for(int i=k; i<n; i++)
#define w(x)  int x; cin>>x; while(x--)
#define watch(x) cout << (#x) << " is " << (x) << "\n"
#define watch2(x,y) cout <<(#x)<<" is "<<(x)<<" and "<<(#y)<<" is "<<(y)<<"\n"
#define watch3(x,y,z) cout <<(#x)<<" is "<<(x)<<" and "<<(#y)<<" is "<<(y)<<" and "<<(#z)<<" is "<<(z)<<"\n"
#define watch4(x,y,z,q) cout <<(#x)<<" is "<<(x)<<" and "<<(#y)<<" is "<<(y)<<" and "<<(#z)<<" is "<<(z)<<" and "<<(#q)<<" is "<<(q)<<"\n"
#define MOD 1000000007
#define INF 1000000007;
#define F first
#define S second
#define pb(x) push_back(x);


#define ll  long long
#define all(c) (c).begin(),(c).end()
#define endl "\n"

typedef vector<int> vl;
typedef vector< vl > vvl;
typedef pair< int, int> pll;
typedef map< int, int> mll;


#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif





void c_p_c()
{
#ifndef ONLINE_JUDGE
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
}
void parray(int a[],int n){
    for(int i=0;i<n;i++){
    cout<<a[i]<<" ";
    }
    cout<<endl;
}

int main() {
    int i,n,m,k,c=0,sum=0;
    c_p_c();

 	cin>>n>>m;
 	string s[n],sin[m];
 	for (int i = 0; i < n; ++i)
 	{
 		/* code */ cin>>s[i];
 	}
 	for (int i = 0; i < m; ++i)
 	{
 		/* code */cin>>sin[i];
 	}



 	bool yep = false;

 	for (int i = 0; i < n; ++i)
 	{
 		/* code */
 		for (int j = 0; j < n; ++j)
 		{
 			/* code */


 			if(s[i][j]==sin[0][0]){

 				// watch2(s[i][j],sin[0][0]);

 				if(i+m<=n and j+m<=n){
 					// cout<<"sdfsdf"<<endl;

 					// if(s[i][j]==sin[])
 					yep=true;
 					for (int p = 0; p < m; ++p)
 					{
 						/* code */
 						for (int u = 0; u < m; ++u)
 						{
 							/* code */
 							if(s[i+p][j+u]!=sin[p][u])
 							{
 								yep=false;
 								break;
 							}
 						}
 					}

 					if(yep==true){
 						cout<<"Yes"<<endl;
 						break;
 					}




 				}





 			}


 		}
 		if(yep==true)
 			break;
 	}


 	if(yep==false)
 		cout<<"No"<<endl;


 	return 0;

   }

Measured memory_bytes: 3628