Modal Analysis Value

Dear Team,

I am running Modal Analysis i am getting Frequency value two time example first and second frequency value sam and thrid and fourth frequency value same. Why i am getting like this. But in Ansys getting Correctly. Please give some solution to this.... Thanks in advance.

Regards,

A D Kumar.

Note: for your  information i enclosed ansys example web link http://www.mece.ualberta.ca/tutorials/ansys/IT/Modal/Modal.html

SolidworksSimulation