There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04，更多细节参见搜狗输入法下载
。快连下载-Letsvpn下载对此有专业解读
В России ответили на имитирующие высадку на Украине учения НАТО18:04
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36，推荐阅读同城约会获取更多信息
7-day free trial, then $59.99/month for 2 months