class Slots:
    BRIGHTNESS = 'Brightness'
    STAR_SIZE = 'StarSize'
    PLANET_SIZE = 'PlanetSize'
    AGE = 'Age'
    DISTANCE = 'Distance'
    PRODUCT = 'Product'


class Brightness:
    YELLOW = 'yellow'
    RED = 'red'
    BLUE = 'blue'


class StarSize:
    DWARF = 'dwarf'
    GIANT = 'giant'
    SUPER = 'super'


class Age:
    YOUNG = 'young'
    MIDDLE = 'middle-aged'
    OLD = 'old'


class PlanetSize:
    SMALL = 'small'
    MEDIUM = 'medium'
    LARGE = 'large'


class Distance:
    NEAR = 'near'
    MIDWAY = 'midway'
    FAR = 'far'

