Consider the formula p V-q-rvp Fill in the blanks with names of the columns of a truth table for this formula. To insert special symbols, copy them from the given formula. If there is more than one way to label columns, put them in left to right order. Do not simplify the formula. For example, if the formula is (p q) ^ - p, then insert the following in the five blanks (without numbers, numbers are just to denote which blank it is): 1)p 2) q 3) p - q 4) -p 5) (p q) 1-p Note that the variable columns are labeled in alphabetical order (p, then q, then r...), p -q is listed before -p (left to right), and there are no outer parentheses on any formulas