-er a-a a-z aaa aad aae aam aar aaz ad- ada add ade adm adr adz aea aed aee aem aer aez ama amd ame amm amr amz ar- ara ard are arm arr arz az- aza azd aze azm azz daa dad dae dam dar daz dda ddd dde ddm ddr ddz de- dea ded dee dem der dez dma dmd dme dmm dmr dmz dra drd dre drm drr drz dza dzd dze dzr eaa ead eae eam ear eaz ed- eda edd ede edm edr eea eed eee eem eer em- ema emd eme emm emr era erd ere erm err erz eze ezr ezz m-r maa mad mae mam mar maz mda mdd mde mdm mdr mdz mea med mee mem mer mez mma mmd mme mmm mmr mmz mra mrd mre mrm mrr mrz mza mzm ra- raa rad rae ram rar raz rda rdd rde rdm rdr re- rea red ree rem rer rez rma rmd rme rmm rmr rra rrd rrm rrr rza rze rzm zaa zad zam zar zaz zdm zea zed zee zem zer zez zma zmd zmm zzr zzz