Help on how to root samsung galaxy s4 i9505 4.4.2 xxugng8 topic

I want to root my s4 i9505 running android 4.4.2. I cant find guides on how to root my version (XXUGNG8). I always find so many tutorials but they say you have to be versions like xxufnb8 or something like that and other ones. Please can someone find me a tutorial kn how to root my s4?

Thanks

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