I am learning to play the guitar, and was wanting to know, which notes on the guitar strings do not have sharps?

For example: the string chords from top to bottom are EADGBA, the top string played open is E, so pressing down on the first fret would be E Sharp, then F then F sharp, G and G sharp, but I know there are a couple that don't have sharps, which ones are they? Thank you for any help
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