Akm = {{0, 0, (1/5)*(Ea + Ebx2y2 + Ebxy + (2)*(Ee))} , 
       {2, 0, Ea + (-1)*(Ebx2y2) + (-1)*(Ebxy) + Ee} , 
       {4, 0, (3/10)*((6)*(Ea) + Ebx2y2 + Ebxy + (-8)*(Ee))} , 
       {4, 4, (3/2)*((sqrt(7/10))*(Ebx2y2 + (-1)*(Ebxy) + (-2*I)*(Mb)))} , 
       {4,-4, (3/2)*((sqrt(7/10))*(Ebx2y2 + (-1)*(Ebxy) + (2*I)*(Mb)))} }