class Tractor:
    def __init__(self, horizontal_index, vertical_index, hitch, header, fuel_tank):
        self.horizontal_index = horizontal_index
        self.vertical_index = vertical_index
        self.hitch = hitch
        self.header = header
        self.fuel_tank = fuel_tank

    @property
    def horizontal_index(self):
        return self.__horizontal_index

    @horizontal_index.setter
    def horizontal_index(self, horizontal_index):
        self.__horizontal_index = horizontal_index
        
    @property
    def vertical_index(self):
        return self.__vertical_index

    @vertical_index.setter
    def vertical_index(self, vertical_index):
        self.__vertical_index = vertical_index
    
    @property
    def hitch(self):
        return self.__hitch

    @hitch.setter
    def hitch(self, hitch):
        self.__hitch = hitch
    
    @property
    def fuel_tank(self):
        return self.__fuel_tank

    @fuel_tank.setter
    def fuel_tank(self, fuel_tank):
        self.__fuel_tank = fuel_tank
        
    @property
    def header(self):
        return self.__header

    @header.setter
    def header(self, header):
        self.__header = header