-er a-a aaa aad aae aag aao aar aas aax ad- ada add ade adg ado adr ads adx aea aed aee aeg aeo aer aes aex ag- aga agd age agg ago agr ags agx aoa aod aoe aog aoo aor aos aox ar- ara ard are arg aro arr ars arx as- asa asd ase asg aso asr ass asx ax- axa axe axo axr axs axx daa dad dae dag dao dar das dax dda ddd dde ddg ddo ddr dds ddx de- dea ded dee deg deo der des dex dga dgd dge dgg dgr dgs doa dod doe dog doo dor dos dox dra drd dre drg dro drr drs drx dsa dsd dse dsg dso dsr dss dsx dxd dxo dxr dxs dxx eaa ead eae eag eao ear eas eax ed- eda edd ede edg edo edr eds edx eea eed eee eeg eeo eer ees eex ega egd ege egg ego egr egs egx eo- eoa eod eoe eog eoo eor eos era erd ere erg ero err ers es- esa esd ese esg eso esr ess esx ex- exa exd exe exo exr exs exx g-d gaa gad gae gag gao gar gas gda gdd gde gdo gdr gds gdx ge- gea ged gee geg geo ger ges gex gga ggd ggg ggo ggr ggs goa god goe gog goo gor gos gox gra grd gre grg gro grr grs grx gsa gsd gse gsg gso gsr gss gsx gxa gxs oaa oad oae oag oao oar oas oax oda odd ode odg odo odr ods oea oed oee oeg oeo oer oes oex oga ogd oge ogg ogo ogs ogx oo- ooa ood oog ooo oor oos oox or- ora ord ore org oro orr ors orx os- osa osd ose osg oso osr oss osx ox- oxa oxo oxx ra- raa rad rae rag rao rar ras rax rda rdd rde rdg rdo rdr rds rdx re- rea red ree reg reo rer res rex rga rgd rge rgg rgo rgr rgs rgx roa rod roe rog roo ror ros rox rra rrd rrg rrr rrs rsa rsd rse rsg rso rsr rss rsx rxr rxs saa sad sae sag sao sar sas sax sda sdd sde sdg sdo sdr sds se- sea sed see seg seo ser ses sex sga sgd sge sgg sgo sgr sgs sgx soa sod soe sog soo sor sos sox sr- sra srd sre srg sro srr srs srx ss- ssa ssd sse ssg sso ssr sss ssx sxs xaa xad xag xar xas xda xde xdr xds xed xee xeg xer xes xex xge xoa xod xog xoo xor xos xox xrd xrx xsa xss xxo xxx