Akm = {{2, 0, A(2,0)} , 
       {2,-1, (-1)*(A(2,1)) + (I)*(B(2,1))} , 
       {2, 1, A(2,1) + (I)*(B(2,1))} , 
       {2,-2, A(2,2) + (-I)*(B(2,2))} , 
       {2, 2, A(2,2) + (I)*(B(2,2))} }