diagonalizing the dynamical matrix ...

 q =       0.0000      0.0000      0.0000
 **************************************************************************
     freq (    1) =       0.000000 [THz] =       0.000000 [cm-1]
 (  0.000000   0.000000    -0.707107   0.000000     0.000000   0.000000   )
 (  0.000000   0.000000    -0.707107   0.000000     0.000000   0.000000   )
     freq (    2) =       0.000000 [THz] =       0.000000 [cm-1]
 ( -0.707107   0.000000     0.000000   0.000000     0.000000   0.000000   )
 ( -0.707107   0.000000     0.000000   0.000000     0.000000   0.000000   )
     freq (    3) =       0.000000 [THz] =       0.000000 [cm-1]
 (  0.000000   0.000000     0.000000   0.000000    -0.707107   0.000000   )
 (  0.000000   0.000000     0.000000   0.000000    -0.707107   0.000000   )
     freq (    4) =      15.673472 [THz] =     522.810745 [cm-1]
 (  0.000000   0.000000     0.707107   0.000000     0.000000   0.000000   )
 (  0.000000   0.000000    -0.707107   0.000000     0.000000   0.000000   )
     freq (    5) =      15.673472 [THz] =     522.810745 [cm-1]
 (  0.000000   0.000000     0.000000   0.000000    -0.707107   0.000000   )
 (  0.000000   0.000000     0.000000   0.000000     0.707107   0.000000   )
     freq (    6) =      15.673472 [THz] =     522.810745 [cm-1]
 ( -0.707107   0.000000     0.000000   0.000000     0.000000   0.000000   )
 (  0.707107   0.000000     0.000000   0.000000     0.000000   0.000000   )
 **************************************************************************