A = [-0.1005 ,  1.0939 ,  2.0428 ,  4.4599
-1.0880 , -0.1444 ,  5.9859 , -3.0481
-2.0510 , -5.9709 , -0.1387 ,  1.9229
-4.4575 ,  3.0753 , -1.8847 , -0.1164]