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:
（二）非法买卖、运输、携带、持有少量未经灭活的罂粟等毒品原植物种子或者幼苗的；
Photographer: Yuki Iwamura/Bloomberg，更多细节参见搜狗输入法2026
（二）在车辆、行人通行的地方施工，对沟井坎穴不设覆盖物、防围和警示标志的，或者故意损毁、移动覆盖物、防围和警示标志的；，详情可参考夫子
subtotals by document type), and deposited the check in an appropriate sorter，推荐阅读快连下载安装获取更多信息
Maggie 姐每天开工前都要在湾仔道一家发廊弄头发（图：南方人物周刊记者 方迎忠）