Akm = {{0, 0, (1/3)*(Ea + Ebx + Eby)} , 
       {2, 0, (5/6)*((2)*(Ea) + (-1)*(Ebx) + (-1)*(Eby))} , 
       {2, 2, (5/2)*((1/(sqrt(6)))*(Ebx + (-1)*(Eby) + (-2*I)*(Mb)))} , 
       {2,-2, (5/2)*((1/(sqrt(6)))*(Ebx + (-1)*(Eby) + (2*I)*(Mb)))} }