Cave name generator partial probabilities calculation

        possibilities += numberadj; // 1 (The) [Adj] [Cave]
        possibilities += (numberadj*numbernouns)+numbernouns; // 2 (The) ([Adj]) [SgNoun] [Cave]
        possibilities += (numberadj*numberabstr)+numberabstr; // 3 (The) ([Adj]) [Abstr] [Cave]
        possibilities += numberadj*numbernouns; // 4 (The) [Adj] [PlNoun] [Cave]
        possibilities += (numberadj*numberverbs)+numberverbs; // 5 (The) ([Adj]) [PresPV] [Cave]
        possibilities += (numberadj*numberverbs*numbernouns)+(numberverbs*numbernouns); // 6 (The) ([Adj]) [PresPV] [SgNoun] [Cave]
        possibilities *= 2*numbercaves;