a
d
x1
d
b
x1
a
x1
b
b
b
x1
b
d
b
x1
a
c
x1
c
x1
d
x1
2.2
a
x1
b
b
x1
a
d
x1
b
x1
b
d
b
x1
c
x1
a
x1
b
x1
a
x1
b
b
b
x1
b
d
b
x1
a
c
x1
true
b
d
b
x1
a
c
x1
a
x1
b
b
b
x1
a
x1
b
x1
a
d
x1
b
x1
a
x1
b
b
x1
true
a
1
1
0
d
1
1
11293
b
1
1
0
c
1
1
11293
c
1
0
a
1
1
0
b
1
1
0
a
x1
b
b
x1
a
x1
b
x1
a
x1
b
b
b
x1
b
d
b
x1
a
c
x1
c
x1
d
x1
a
d
x1
d
b
x1
b
d
b
x1
a
c
x1
a
x1
b
b
b
x1
b
d
b
x1
a
c
x1
a
x1
b
x1
a
x1
b
b
x1
a
x1
b
b
b
x1
true
2
1
a
1
1
63723
63723
d
1
1
1
1
1
1
40334
57575
b
1
1
21241
21241
c
1
1
1
1
1
1
40334
57575
c
1
0
0
a
1
1
0
0
0
1
42482
8
b
1
1
0
0
0
1
0
8
a
x1
b
b
b
x1
b
d
b
x1
a
c
x1
c
x1
d
x1
a
d
x1
d
b
x1
b
d
b
x1
a
c
x1
a
x1
b
b
b
x1
b
d
b
x1
a
c
x1
a
x1
b
b
b
x1
true
Failed!
NaTT
certifiable-1.6