C r 2 s 3

C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3
C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3
C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3C r 2 s 3