11
3 1 1 X+
3 1 1 X-
7 1 1 X+
4 1 1 X-
4 1 1 Y+
4 2 1 Y-
8 1 1 X-
8 1 1 X+
9 1 1 X-
9 1 1 X+
10 1 1 X-
4 2 1