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- ${{^{(}{x}{ }{+}{ }{4}{)}}}{3}$
- ${{^{(}{x}{ }{-}{ }{4}{)}}}{3}$
- ${{^{(}{x}{ }{+}{ }{2}{)}}}{3}$
- ${{^{(}{x}{ }{-}{ }{2}{)}}}{3}$