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R vr

R vrR vrR vrR vr
R vrR vrR vrR vrR vrR vrR vrR vr
R vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vr
R vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vrR vr
R vrR vrR vrR vrR vrR vrR vrR vr