6. Condorcet’s voting paradox shows that with three voters (or three equal-size groups of voters) and the three alternatives , and , it is possible to have two-thirds prefer to , two-thirds prefer to , and two-thirds prefer to . Find four preference lists that show that with four voters and the four alternatives , and , it is possible to have three-fourths prefer to , three-fourths prefer to , three-fourths prefer to , and three-fourths prefer to .