3
X
-
1
0
(
X
-
1
)
(
2
X
+
X
+
1
)
0
X
_
1
1
X
_
2
(
1
/
2
)
-
1
+
3
X
_
3
(
1
/
2
)
-
1
-
3
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
5
X
-
1
0
X
_
0
1
X
_
1
1
4
-
1
+
5
+
2
5
+
5
X
_
2
-
1
4
-
5
4
-
1
4
1
2
5
+
5
+
1
4
5
2
5
+
5
X
_
3
-
1
4
-
5
4
+
1
4
1
2
5
+
5
-
1
4
5
2
5
+
5
X
_
4
-
1
4
+
5
4
-
1
2
1
2
5
+
5