ab

clc
close all
clear all

Y = 8×8

   1 0 0 0 0 0 0 0
   0 1 0 0 0 0 0 0
   0 0 1 0 0 0 0 0
   0 0 0 1 0 0 0 0
   0 0 0 0 1 0 0 0
   0 0 0 0 0 1 0 0
   0 0 0 0 0 0 1 0
   0 0 0 0 0 0 0 1
for i=0:1:7

    Ai,2=Y7+Y6+Y5+Y4
    Ai,1=Y7+Y6+Y3+Y2
    Ai,0=Y7+Y5+Y3+Y1

end