3qufnb 2qufn 1quf 0qufnb zqufn

e0tfn d0tf c0tfnb b0tfn a0tf

p9sf o9sfnb n9sfn m9sf l9sfnb

0isfnb zisfn yisf xisfnb wisfn

bsrfn asrf 9rrfnb 8rrfn 7rrf