```ruby
require_relative '../badge'

class CitizenPatrol < Badge
  def series
    :citizen_patrol
  end
end

class Deputy < CitizenPatrol
end

class Marshal < CitizenPatrol
end
```

Comment out Marshal badge for time being (clashing with existing Ruby class)
user
```ruby
require_relative '../badge'

class CitizenPatrol < Badge
  def series
    :citizen_patrol
  end
end

class Deputy < CitizenPatrol
end

# class Marshal < CitizenPatrol
# end
```
assistant