R 2 s n 2

R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2
R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2
R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2R 2 s n 2