Akm = {{0, 0, (1/5)*((2)*(Eeg) + (3)*(Et2g))} , 
       {4, 0, (-7/5)*(Eeg + (-1)*(Et2g))} , 
       {4,-3, (-1+1*I)*((sqrt(7/5))*(Eeg + (-1)*(Et2g)))} , 
       {4, 3, (1+1*I)*((sqrt(7/5))*(Eeg + (-1)*(Et2g)))} }