-er ddd dde ddm ddo ddr dds ddt ddu de- ded dee dem deo der des det deu dmd dme dmm dmo dmr dms dmt dmu dod doe dom doo dor dos dot dou drd dre drm dro drr drs drt dru dsd dse dsm dso dsr dss dst dsu dtd dte dtm dto dtr dts dtt dtu dud due dum duo dur dus dut ed- edd ede edm edo edr eds edt edu eed eee eem eeo eer ees eet em- emd eme emm emo emr ems emt emu eo- eod eoe eom eoo eor eos eot eou erd ere erm ero err ers ert eru es- esd ese esm eso esr ess est esu etd ete etm eto etr ets ett etu eu- eud eue eur eus eut m-o m-r mdd mde mdm mdo mdr mds mdt mdu med mee mem meo mer mes met meu mmd mme mmm mmo mmr mms mmt mmu mod moe mom moo mor mos mot mou mrd mre mrm mro mrr mrs mrt mru msd mse msm mso msr mss mst msu mtd mte mtm mto mtr mts mtt mtu mud mue mum mur mus mut muu odd ode odm odo odr ods odt odu oed oee oem oeo oer oes oet om- omd ome omm omo omr oms omt omu oo- ood oom ooo oor oos oot or- ord ore orm oro orr ors ort oru os- osd ose osm oso osr oss ost osu ot- otd ote otm oto otr ots ott otu ou- oud oue oum ouo our ous out rdd rde rdm rdo rdr rds rdt rdu re- red ree rem reo rer res ret reu rmd rme rmm rmo rmr rms rmt rod roe rom roo ror ros rot rou rrd rrm rrr rrs rrt rru rsd rse rsm rso rsr rss rst rsu rtd rte rtm rto rtr rts rtt rtu rud rue rum ruo rur rus rut ruu sdd sde sdm sdo sdr sds sdt sdu se- sed see sem seo ser ses set seu smd sme smm smo smr sms smt smu sod soe som soo sor sos sot sou sr- srd sre srm sro srr srs srt ss- ssd sse ssm sso ssr sss sst ssu std ste stm sto str sts stt stu sud sue sum suo sur sus sut suu tdd tde tdm tdo tdr tds tdt tdu te- ted tee tem teo ter tes tet teu tmd tme tmm tmo tmr tms tmt tmu to- tod toe tom too tor tos tot tou trd tre trm tro trr trs trt tru tsd tse tsm tso tsr tss tst tsu ttd tte ttm tto ttr tts ttt ttu tud tue tum tuo tur tus tut tuu udd ude udm udo udr uds udt udu ued uee uem uer ues uet um- umd ume umm umo umr ums umt umu uod uoe uom uoo uor uos uot ur- urd ure urm uro urr urs urt uru usd use usm uso usr uss ust usu utd ute utm uto utr uts utt utu uue uum uur uus uut uuu