iuemrp huemr guem fuemrp euemr
t3dmr s3dm r3dmrp q3dmr p3dm
4cdm 3cdmrp 2cdmr 1cdm 0cdmrp
fmcmrp emcmr dmcm cmcmrp bmcmr
qvbmr pvbm ovbmrp nvbmr mvbm