uaqsrb taqsr saqs raqsrb qaqsr

5jpsr 4jps 3jpsrb 2jpsr 1jps

gtos ftosrb etosr dtos ctosrb

r2nsrb q2nsr p2ns o2nsrb n2nsr

2bnsr 1bns 0bnsrb zbnsr ybns