Seven members of a group of 19 people dislike the New Democratic Party (NDP), 10 dislike the Liberals, 11 dislike the Conservatives, and 6 dislike the Green Party. Five of the group dislike both the Liberals and the New Democratic Party, five dislike both NDP and the Conservatives, six dislike the Liberals and Conservatives, three dislike the New Democratic and the Green parties, four dislike the Liberals and the Greens, and five dislike the Conservatives and the Greens. Three People dislike the Conservatives, Liberals, and the NDP; while two dislike the Liberals, NDP, and Green Party; three dislike the Conservatives, New Democrats, and Greens; and four dislike the Conservatives, Liberals, and Greens. Two people dislike all four parties. How many members of the group like all parties?