j1 1 -1 1 j2 2 1 1 j3 3 1 -1 j4 4 -1 -1 s1 0 1 1.0 s2 0 2 1.0 s3 0 3 1.0 s4 0 4 1.0 s5 1 2 1.0 s6 2 3 1.0 s7 3 4 1.0 s8 4 1 1.0 l1 1 0.0 -1.0 l2 2 0.0 -1.0 l3 3 0.0 1.0 l4 4 0.0 1.0