public static void main ( String [ ] args ) {
  Scanner s = new Scanner ( System . in ) ;
  int test = s . nextInt ( ) ;
  while ( test != 0 ) {
    int n = s . nextInt ( ) ;
    int k = s . nextInt ( ) ;
    int count = n - k ;
    count += k / 2 ;
    System . out . println ( count ) ;
    for ( int i = k + 1 ;
    i <= n ;
    i ++ ) {
      System . out . print ( i + " " ) ;
    }
    for ( int i = k - 1 ;
    i >= ( k + 1 ) / 2 ;
    i -- ) {
      System . out . print ( i + " " ) ;
    }
    System . out . println ( ) ;
    test -- ;
  }
}

public static void main ( String [ ] args ) { Scanner s = new Scanner ( System . in ) ; int test = s . nextInt ( ) ; while ( test != 0 ) { int n = s . nextInt ( ) ; int k = s . nextInt ( ) ; int count = n - k ; count += k / 2 ; System . out . println ( count ) ; for ( int i = k + 1 ; i <= n ; i ++ ) { System . out . print ( i + " ▁ " ) ; } for ( int i = k - 1 ; i >= ( k + 1 ) / 2 ; i -- ) { System . out . print ( i + " ▁ " ) ; } System . out . println ( ) ; test -- ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (string_literal))))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (string_literal))))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list))) (expression_statement (update_expression (identifier)))))))