public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int y = sc . nextInt ( ) ;
  int x = sc . nextInt ( ) ;
  char arr [ ] [ ] = new char [ y ] [ x ] ;
  for ( int i = 0 ;
  i < y ;
  i ++ ) {
    arr [ i ] = sc . next ( ) . toCharArray ( ) ;
  }
  int top = Integer . MAX_VALUE ;
  int bottom = - 1 ;
  int left = Integer . MAX_VALUE ;
  int right = - 1 ;
  for ( int i = 0 ;
  i < y ;
  i ++ ) {
    for ( int j = 0 ;
    j < x ;
    j ++ ) {
      if ( arr [ i ] [ j ] == '*' ) {
        top = Math . min ( i , top ) ;
        bottom = Math . max ( bottom , i ) ;
        left = Math . min ( left , j ) ;
        right = Math . max ( right , j ) ;
      }
    }
  }
  for ( int i = top ;
  i <= bottom ;
  i ++ ) {
    for ( int j = left ;
    j <= right ;
    j ++ ) {
      System . out . print ( arr [ i ] [ j ] ) ;
    }
    System . out . println ( ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int y = sc . nextInt ( ) ; int x = sc . nextInt ( ) ; char arr [ ] [ ] = new char [ y ] [ x ] ; for ( int i = 0 ; i < y ; i ++ ) { arr [ i ] = sc . next ( ) . toCharArray ( ) ; } int top = Integer . MAX_VALUE ; int bottom = - 1 ; int left = Integer . MAX_VALUE ; int right = - 1 ; for ( int i = 0 ; i < y ; i ++ ) { for ( int j = 0 ; j < x ; j ++ ) { if ( arr [ i ] [ j ] == ' * ' ) { top = Math . min ( i , top ) ; bottom = Math . max ( bottom , i ) ; left = Math . min ( left , j ) ; right = Math . max ( right , j ) ; } } } for ( int i = top ; i <= bottom ; i ++ ) { for ( int j = left ; j <= right ; j ++ ) { System . out . print ( arr [ i ] [ j ] ) ; } System . out . println ( ) ; } }
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