a
a
b
x1
c
d
x1
b
e
b
x1
e
d
x1
b
d
x1
e
b
x1
b
b
b
x1
e
e
x1
e
e
e
x1
d
e
x1
d
x1
b
e
x1
c
d
a
x1
c
x1
d
c
x1
c
d
a
x1
a
x1
e
b
x1
2.2
b
e
b
x1
d
x1
a
x1
b
x1
d
c
x1
c
d
a
x1
b
d
x1
e
b
x1
a
a
b
x1
c
d
x1
a
a
b
x1
d
x1
d
c
x1
d
a
x1
c
d
a
x1
c
x1
b
d
x1
b
x1
a
x1
e
b
x1
b
b
b
x1
e
x1
b
b
b
x1
e
e
x1
d
x1
b
e
x1
b
e
b
x1
e
d
x1
e
e
e
x1
d
e
x1
d
c
x1
a
x1
d
x1
e
x1
true
d
x1
e
x1
d
c
x1
d
a
x1
d
c
x1
a
x1
a
a
b
x1
d
x1
e
e
e
x1
d
e
x1
b
e
b
x1
e
d
x1
d
x1
b
e
x1
b
b
b
x1
e
e
x1
b
d
x1
e
b
x1
b
b
b
x1
e
x1
a
x1
b
x1
a
x1
e
b
x1
b
d
x1
b
x1
b
e
b
x1
d
x1
true
2
1
a
1
0
1
0
1
1
8518
0
d
1
0
0
0
1
1
0
0
b
1
0
0
0
1
1
0
0
e
1
0
0
1
0
1
0
0
c
1
0
1
0
1
1
0
8518
d
1
0
0
1
0
1
0
0
c
1
0
0
e
1
0
0
0
1
1
0
0
a
1
0
0
1
0
1
1
0
b
1
0
0
1
0
1
0
0
b
e
b
x1
d
x1
b
d
x1
b
x1
b
b
b
x1
e
x1
b
d
x1
e
b
x1
b
b
b
x1
e
e
x1
d
x1
b
e
x1
b
e
b
x1
e
d
x1
e
e
e
x1
d
e
x1
d
x1
e
x1
b
b
b
x1
e
e
x1
d
c
x1
c
d
a
x1
a
a
b
x1
c
d
x1
b
d
x1
e
b
x1
e
e
e
x1
d
e
x1
c
d
a
x1
c
x1
a
x1
e
b
x1
d
x1
b
e
x1
b
e
b
x1
e
d
x1
b
b
b
x1
e
x1
b
b
b
x1
e
e
x1
b
d
x1
b
x1
b
d
x1
e
b
x1
e
e
e
x1
d
e
x1
d
x1
e
x1
d
x1
b
e
x1
b
e
b
x1
d
x1
b
e
b
x1
e
d
x1
true
a
1
1
93646
d
1
1
93646
b
1
1
46823
e
1
1
0
c
1
8946
d
1
1
46823
c
1
0
e
1
1
46823
a
1
0
b
1
1
0
b
e
b
x1
e
d
x1
d
x1
b
e
x1
e
e
e
x1
d
e
x1
b
b
b
x1
e
e
x1
d
c
x1
c
d
a
x1
a
a
b
x1
c
d
x1
b
d
x1
e
b
x1
e
e
e
x1
d
e
x1
c
d
a
x1
c
x1
a
x1
e
b
x1
d
x1
b
e
x1
b
e
b
x1
e
d
x1
e
e
e
x1
d
e
x1
d
x1
b
e
x1
b
e
b
x1
e
d
x1
true
Failed!
NaTT
certifiable-1.6