8 -4 2 1 2 2 -2 2 2 2 1 1 8 2 2 1 2 6 2 1 ()2 2 1 6 1 1 ()1 9 -1 1 2 1 3 1 1 1 1 2 2 2 1 1 6 1 -1 -14 8 -2 1 3 1 16 4 1