Max (X->Z)
0.00 x=0 0
0.40 z=0 0
Z->0
10.00 z=0 1
11.50 0=0 1
0->Z
20.00 0=0 0
21.20 z=0 0
25.00 z=1 0
Z->1
30.00 z=1 1
31.30 1=1 1
1->Z
40.00 1=1 0
41.40 z=1 0