3   8
-27 -12 -12 -16 -24 -31 -41 -13
-14  -5 -37  -9 -36 -25  -1 -35
-34 -34 -20  -9 -19 -19  -3 -24
21 13  9  5  7 15  5 24
20  8 18 25  6  6  9  6
16 16 18 24 11 11 16 18
26 25 34

http://www.or.deis.unibo.it/kp/Chapter7.pdf Example 7.3