1
x
12
= ?
20
x
1
= ?
4
x
2
= ?
2
x
0
= ?
0
x
15
= ?
4
x
1
= ?
19
x
0
= ?
16
x
1
= ?
6
x
0
= ?
1
x
6
= ?
12
0
20
0
0
16
6
0
8
4
0
x
12
= ?
1
x
3
= ?
4
x
2
= ?
4
x
1
= ?
1
x
1
= ?
1
x
4
= ?
1
x
16
= ?
1
x
10
= ?
1
x
17
= ?
2
x
9
= ?
1
4
10
0
4
3
17
8
16
18
20
0
0
conicimo