The Union Public Service Commission has introduced changes in the pattern of Civil Services (preliminary) examination which is conducted to select candidates for prestigious central services such as IFS, IAS, IRS, IPS and others. Now it is looking forward to bring some changes in the pattern of 'main' examination as well with effect from 2013.A panel has been constituted by UPSC to suggest possible changes in the pattern of Civil Service (main) Examination. Its report is expected to come out early next year.There are three stages in UPSC exam- 'preliminary', 'main' and personality test (interview). UPSC chairman D P Agrawal said that the commission has now constituted a high power panel to look into the matter.He made it clear that commission will ensure that candidates from multiple languages, communities and culture are judged on the basis of in-depth understanding and knowledge.'Preliminary' exam pattern was changed this year by incorporating elements