public static void main ( String [ ] args ) {
  Scanner in = new Scanner ( System . in ) ;
  int n = in . nextInt ( ) ;
  while ( n -- > 0 ) {
    int l = in . nextInt ( ) , m = in . nextInt ( ) ;
    char [ ] [ ] chars = new char [ l ] [ m ] ;
    int [ ] row = new int [ l ] , column = new int [ m ] ;
    for ( int i = 0 ;
    i < l ;
    i ++ ) {
      String s = in . next ( ) ;
      for ( int j = 0 ;
      j < m ;
      j ++ ) {
        if ( s . charAt ( j ) == '*' ) {
          row [ i ] ++ ;
          column [ j ] ++ ;
        }
        chars [ i ] [ j ] = s . charAt ( j ) ;
      }
    }
    int ans = - 1 ;
    for ( int i = 0 ;
    i < l ;
    i ++ ) {
      for ( int j = 0 ;
      j < m ;
      j ++ ) {
        if ( ans == - 1 ) {
          ans = ( l - row [ i ] ) + ( m - column [ j ] ) - ( chars [ i ] [ j ] == '.' ? 1 : 0 ) ;
        }
        else {
          ans = Math . min ( ans , ( l - row [ i ] ) + ( m - column [ j ] ) - ( chars [ i ] [ j ] == '.' ? 1 : 0 ) ) ;
        }
      }
    }
    println ( ans ) ;
  }
}

public static void main ( String [ ] args ) { Scanner in = new Scanner ( System . in ) ; int n = in . nextInt ( ) ; while ( n -- > 0 ) { int l = in . nextInt ( ) , m = in . nextInt ( ) ; char [ ] [ ] chars = new char [ l ] [ m ] ; int [ ] row = new int [ l ] , column = new int [ m ] ; for ( int i = 0 ; i < l ; i ++ ) { String s = in . next ( ) ; for ( int j = 0 ; j < m ; j ++ ) { if ( s . charAt ( j ) == ' * ' ) { row [ i ] ++ ; column [ j ] ++ ; } chars [ i ] [ j ] = s . charAt ( j ) ; } } int ans = - 1 ; for ( int i = 0 ; i < l ; i ++ ) { for ( int j = 0 ; j < m ; j ++ ) { if ( ans == - 1 ) { ans = ( l - row [ i ] ) + ( m - column [ j ] ) - ( chars [ i ] [ j ] == ' . ' ? 1 : 0 ) ; } else { ans = Math . min ( ans , ( l - row [ i ] ) + ( m - column [ j ] ) - ( chars [ i ] [ j ] == ' . ' ? 1 : 0 ) ) ; } } } println ( ans ) ; } }
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arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier)) dimensions: (dimensions_expr (identifier))))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier)))) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) 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