public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  int h = sc . nextInt ( ) ;
  int w = sc . nextInt ( ) ;
  String [ ] [ ] a = new String [ h ] [ w ] ;
  boolean [ ] row = new boolean [ h ] ;
  boolean [ ] column = new boolean [ w ] ;
  for ( int i = 0 ;
  i < h ;
  i ++ ) {
    a [ i ] = sc . next ( ) . split ( "" ) ;
    row [ i ] = false ;
  }
  for ( int i = 0 ;
  i < w ;
  i ++ ) {
    column [ i ] = false ;
  }
  for ( int i = 0 ;
  i < h ;
  i ++ ) {
    for ( int j = 0 ;
    j < w ;
    j ++ ) {
      if ( "#" . equals ( a [ i ] [ j ] ) ) {
        row [ i ] = true ;
        column [ j ] = true ;
      }
    }
  }
  for ( int i = 0 ;
  i < h ;
  i ++ ) {
    if ( ! row [ i ] ) {
      continue ;
    }
    StringJoiner sj = new StringJoiner ( "" ) ;
    for ( int j = 0 ;
    j < w ;
    j ++ ) {
      if ( ! column [ j ] ) {
        continue ;
      }
      sj . add ( a [ i ] [ j ] ) ;
    }
    System . out . println ( sj . toString ( ) ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; int h = sc . nextInt ( ) ; int w = sc . nextInt ( ) ; String [ ] [ ] a = new String [ h ] [ w ] ; boolean [ ] row = new boolean [ h ] ; boolean [ ] column = new boolean [ w ] ; for ( int i = 0 ; i < h ; i ++ ) { a [ i ] = sc . next ( ) . split ( " " ) ; row [ i ] = false ; } for ( int i = 0 ; i < w ; i ++ ) { column [ i ] = false ; } for ( int i = 0 ; i < h ; i ++ ) { for ( int j = 0 ; j < w ; j ++ ) { if ( " # " . equals ( a [ i ] [ j ] ) ) { row [ i ] = true ; column [ j ] = true ; } } } for ( int i = 0 ; i < h ; i ++ ) { if ( ! row [ i ] ) { continue ; } StringJoiner sj = new StringJoiner ( " " ) ; for ( int j = 0 ; j < w ; j ++ ) { if ( ! column [ j ] ) { continue ; } sj . add ( a [ i ] [ j ] ) ; } System . out . println ( sj . toString ( ) ) ; } }
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name: (identifier) value: (array_creation_expression type: (type_identifier) dimensions: (dimensions_expr (identifier)) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (array_type element: (boolean_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (boolean_type) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (array_type element: (boolean_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (boolean_type) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) name: (identifier) arguments: (argument_list (string_literal))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (false))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (false))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: 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(expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))))