-er ddd dde ddm ddo ddr dds ddz de- ded dee dem deo der des dez dmd dme dmm dmo dmr dms dmz dod doe dom doo dor dos doz drd dre drm dro drr drs drz dsd dse dsm dso dsr dss dsz dzd dze dzo dzr dzs ed- edd ede edm edo edr eds eed eee eem eeo eer ees em- emd eme emm emo emr ems eo- eod eoe eom eoo eor eos erd ere erm ero err ers erz es- esd ese esm eso esr ess eze ezo ezr ezs ezz m-o m-r mdd mde mdm mdo mdr mds mdz med mee mem meo mer mes mez mmd mme mmm mmo mmr mms mmz mod moe mom moo mor mos moz mrd mre mrm mro mrr mrs mrz msd mse msm mso msr mss mzm odd ode odm odo odr ods oed oee oem oeo oer oes om- omd ome omm omo omr oms omz oo- ood oom ooo oor oos or- ord ore orm oro orr ors orz os- osd ose osm oso osr oss oze ozm ozo ozs ozz rdd rde rdm rdo rdr rds re- red ree rem reo rer res rez rmd rme rmm rmo rmr rms rod roe rom roo ror ros roz rrd rrm rrr rrs rsd rse rsm rso rsr rss rze rzm rzo sdd sde sdm sdo sdr sds sdz se- sed see sem seo ser ses sez smd sme smm smo smr sms smz sod soe som soo sor sos soz sr- srd sre srm sro srr srs ss- ssd sse ssm sso ssr sss ssz szd sze szr zdm zds zed zee zem zeo zer zes zez zmd zmm zms zo- zod zoe zom zoo zor zos zro zrs zse zsm zsz zzr zzs zzz