clear all

A1 =[
   -2.6530   -2.0349   -3.2854   -2.1526;
    0.8610    0.8198    1.0735    0.5543;
    1.0144    0.7933    1.3374    0.7416;
    0.8593    0.5078    0.9669    0.9810;
    ];


A2 =[
    0.1325   -0.0229    0.1127    0.3267;
    1.8326    1.4762    2.2840    1.4416;
   -1.6871   -1.2252   -2.0552   -1.4431;
    0.6245    0.5039    0.8370    0.4410;
    ];


A3 =[
   -0.0064   -0.1269   -0.1455    0.2931;
    0.4727    0.5146    0.6508    0.3639;
    0.2913    0.3073    0.2523    0.0992;
   -0.8663   -0.5479   -1.0623   -0.7647;
   ];


A4 =[
   -0.0423    0.0770    0.0098   -0.0725;
   -0.0796   -0.0633    0.0341   -0.0463;
   -0.0443   -0.0219   -0.0661   -0.0366;
   -0.1114    0.0247   -0.0018    0.0752;
];