function cells1 = separaterule(cells1,x,y)

for i = x
    for j = y
        rannum = rand;
        if cells1(i,j) > cells1(i-1,j)
            if rannum < 0.47
                cells1(i,j) = 1;
                cells1(i-1,j) = 2;
            end
        elseif cells1(i,j) < cells1(i-1,j)
            if rannum < 0.53
                cells1(i,j) = 2;
                cells1(i-1,j) = 1;
            end
        end
    end
end