This section of Chapter 4 identified four forms of the existential fallacy. Use Venn diagrams to identify the other four. In doing so, keep in mind that all forms of this fallacy have a universal premise and a particular conclusion, that “It is false that some A are B” and “It is false that some A are not B” are universal propositions, and “It is false that all A are B” and “It is false that no A are B” are particular.