1 r 1 r1 1 r2

1 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r2
1 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r2
1 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r21 r 1 r1 1 r2