1.	0.	0.	0.
0.	1.	0.	0.
0.	0.	1.	0.
0.	0.	0.	1.
-1.	0.	0.	0.
0.	-1.	0.	0.
0.	0.	-1.	0.
0.	0.	0.	-1.