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F x 2x 4

F x 2x 4F x 2x 4F x 2x 4F x 2x 4
F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4
F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4
F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4
F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4F x 2x 4