rdtbr4 qdtbr pdtb odtbr4 ndtbr

2msbr 1msb 0msbr4 zmsbr ymsb

dwrb cwrbr4 bwrbr awrb 9vrbr4

o5qbr4 n5qbr m5qb l5qbr4 k5qbr

zeqbr yeqb xeqbr4 weqbr veqb