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R r2

R r2R r2R r2R r2
R r2R r2R r2R r2R r2R r2R r2R r2
R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2
R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2R r2
R r2R r2R r2R r2R r2R r2R r2R r2