-er ddd dde ddg ddo ddr dds ddt ddu ddx de- ded dee deg deo der des det deu dex dgd dge dgg dgr dgs dgt dgu dod doe dog doo dor dos dot dou dox drd dre drg dro drr drs drt dru drx dsd dse dsg dso dsr dss dst dsu dsx dtd dte dtg dto dtr dts dtt dtu dtx dud due dug duo dur dus dut dux dxd dxo dxr dxs dxt dxx ed- edd ede edg edo edr eds edt edu edx eed eee eeg eeo eer ees eet eex egd ege egg ego egr egs egt egu egx eo- eod eoe eog eoo eor eos eot eou erd ere erg ero err ers ert eru es- esd ese esg eso esr ess est esu esx etd ete etg eto etr ets ett etu etx eu- eud eue eug eur eus eut eux ex- exd exe exo exr exs ext exu exx g-d gdd gde gdo gdr gds gdt gdu gdx ge- ged gee geg geo ger ges get geu gex ggd ggg ggo ggr ggs ggt ggu god goe gog goo gor gos got gou gox grd gre grg gro grr grs grt gru grx gsd gse gsg gso gsr gss gst gsu gsx gtd gte gtg gto gtr gts gtt gtu gtx gu- gud gue gug guo gur gus gut guu gxs gxt odd ode odg odo odr ods odt odu oed oee oeg oeo oer oes oet oex ogd oge ogg ogo ogs ogt ogx oo- ood oog ooo oor oos oot oox or- ord ore org oro orr ors ort oru orx os- osd ose osg oso osr oss ost osu osx ot- otd ote otg oto otr ots ott otu ou- oud oue ouo our ous out ox- oxo oxt oxx rdd rde rdg rdo rdr rds rdt rdu rdx re- red ree reg reo rer res ret reu rex rgd rge rgg rgo rgr rgs rgt rgx rod roe rog roo ror ros rot rou rox rrd rrg rrr rrs rrt rru rsd rse rsg rso rsr rss rst rsu rsx rtd rte rtg rto rtr rts rtt rtu rtx rud rue rug ruo rur rus rut ruu rux rxr rxs sdd sde sdg sdo sdr sds sdt sdu se- sed see seg seo ser ses set seu sex sgd sge sgg sgo sgr sgs sgt sgu sgx sod soe sog soo sor sos sot sou sox sr- srd sre srg sro srr srs srt srx ss- ssd sse ssg sso ssr sss sst ssu ssx std ste stg sto str sts stt stu stx sud sue sug suo sur sus sut suu sux sxs sxt sxu t-x tdd tde tdg tdo tdr tds tdt tdu tdx te- ted tee teg teo ter tes tet teu tex tge tgg tgo tgr tgs tgt tgu to- tod toe tog too tor tos tot tou tox trd tre trg tro trr trs trt tru trx tsd tse tsg tso tsr tss tst tsu tsx ttd tte ttg tto ttr tts ttt ttu ttx tud tue tug tuo tur tus tut tuu tux txe txs txt txu udd ude udg udo udr uds udt udu udx ued uee ueg uer ues uet uge ugg ugo ugr ugs ugt ugu ugx uod uoe uog uoo uor uos uot uox ur- urd ure urg uro urr urs urt uru urx usd use usg uso usr uss ust usu usx utd ute uto utr uts utt utu utx uue uug uur uus uut uuu uxo uxr uxt uxu xde xdr xds xdt xed xee xeg xer xes xet xeu xex xge xod xog xoo xor xos xot xox xrd xrt xrx xss xst xtr xts xtx xue xus xxo xxx