public static void main ( String [ ] args ) {
  int n = sc . nextInt ( ) , m = sc . nextInt ( ) ;
  String [ ] a = new String [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    a [ i ] = sc . next ( ) ;
  }
  String [ ] b = new String [ m ] ;
  for ( int i = 0 ;
  i < m ;
  i ++ ) {
    b [ i ] = sc . next ( ) ;
  }
  for ( int i = 0 ;
  i < n - m + 1 ;
  i ++ ) {
    for ( int j = 0 ;
    j < n - m + 1 ;
    j ++ ) {
      boolean ans = true ;
      for ( int k = 0 ;
      k < m ;
      k ++ ) {
        for ( int l = 0 ;
        l < m ;
        l ++ ) {
          if ( a [ i + k ] . charAt ( j + l ) != b [ k ] . charAt ( l ) ) {
            ans = false ;
          }
        }
      }
      if ( ans ) {
        System . out . println ( "Yes" ) ;
        return ;
      }
    }
  }
  System . out . println ( "No" ) ;
}

public static void main ( String [ ] args ) { int n = sc . nextInt ( ) , m = sc . nextInt ( ) ; String [ ] a = new String [ n ] ; for ( int i = 0 ; i < n ; i ++ ) { a [ i ] = sc . next ( ) ; } String [ ] b = new String [ m ] ; for ( int i = 0 ; i < m ; i ++ ) { b [ i ] = sc . next ( ) ; } for ( int i = 0 ; i < n - m + 1 ; i ++ ) { for ( int j = 0 ; j < n - m + 1 ; j ++ ) { boolean ans = true ; for ( int k = 0 ; k < m ; k ++ ) { for ( int l = 0 ; l < m ; l ++ ) { if ( a [ i + k ] . charAt ( j + l ) != b [ k ] . charAt ( l ) ) { ans = false ; } } } if ( ans ) { System . out . println ( " Yes " ) ; return ; } } } System . out . println ( " No " ) ; }
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