Rough translation:
"I have premiere CS6 on a macbook with mountain lion OS. At the moment of export media in premiere, among the exportable formats, I don't see the option for gif or gif animated. Is this possible?? Do I need a special codec?" ...and then I think he wanted to know if he could have his question answered even thoguh he cannot speak/write in English.
Harm's right that it's not possible to export gifs from Ppro, but you can use Photoshop to make animated gifs or image sequence(s) in gif format.
Aso, it will be much easier for people to answer your questions on here if it can be done so in English. If you speak no English, you can a web-based translator to help you get close enough. The best one I've found is: http://www.freetranslation.com
Thanks for using our product. Its great to see international users on here!