>> X= int2str(randn(6,6))
X =
-2   0  1  0  0  1
 0  -1  2  0  1  0
-1  -2  1  0  1  0
 1  0	 -1  0  1  0
-1  -1	  0  1  0  -1
1  -1	 -2  1  2   2
>>
