a
s
x1
s
a
x1
b
a
b
s
x1
a
b
s
a
x1
b
a
b
b
x1
c
s
x1
c
s
x1
a
b
a
b
x1
a
b
a
a
x1
b
a
b
a
x1
2.2
b
a
b
s
x1
b
s
a
x1
a
b
a
a
x1
b
a
x1
c
s
x1
a
b
a
b
x1
c
s
x1
a
b
x1
c
s
x1
b
x1
b
a
b
b
x1
c
s
x1
c
s
x1
b
a
b
x1
a
b
a
a
x1
a
b
a
x1
b
a
b
s
x1
a
x1
b
a
b
s
x1
a
b
s
a
x1
a
s
x1
a
x1
a
b
a
a
x1
b
a
b
a
x1
true
a
b
a
a
x1
b
a
b
a
x1
c
s
x1
b
x1
a
s
x1
a
x1
b
a
b
s
x1
a
x1
c
s
x1
a
b
x1
c
s
x1
a
b
a
b
x1
a
b
a
a
x1
b
a
x1
a
b
a
a
x1
a
b
a
x1
c
s
x1
b
a
b
x1
b
a
b
b
x1
c
s
x1
true
a
1
1
32286
s
1
1
2
b
1
1
32286
c
1
1
129142
c
1
1
96856
a
1
1
0
b
1
1
0
b
a
b
b
x1
c
s
x1
c
s
x1
a
b
a
b
x1
a
b
a
a
x1
b
a
b
a
x1
c
s
x1
a
b
a
b
x1
a
s
x1
s
a
x1
b
a
b
b
x1
c
s
x1
a
b
a
a
x1
b
a
b
a
x1
b
a
b
s
x1
a
b
s
a
x1
c
s
x1
a
b
a
b
x1
b
a
b
b
x1
c
s
x1
a
b
a
a
x1
b
a
b
a
x1
true
Failed!
NaTT
certifiable-1.6