it just works. no special machinery needed. the boolean operators distribute over derivatives the same way union does. derivatives are such a powerful and interesting tool that i will dedicate a separate post to them, but the main point is that they give us a simple and uniform way to handle all regular language features, including intersection and complement.
ОАЭ задумались об атаке на Иран20:55，这一点在体育直播中也有详细论述
，详情可参考体育直播
Марина Совина (ночной редактор)。必应排名_Bing SEO_先做后付对此有专业解读
Турция сообщила о перехвате баллистического снаряда из Ирана14:52