-er a-a a-b a-t aaa aab aad aae aam aao aar aas aat ab- aba abb abd abe abm abo abr abs abt ad- ada adb add ade adm ado adr ads adt aea aeb aed aee aem aeo aer aes aet ama amb amd ame amm amo amr ams amt aoa aob aod aoe aom aoo aor aos aot ar- ara arb ard are arm aro arr ars art as- asa asb asd ase asm aso asr ass ast at- ata atb atd ate atm ato atr ats att baa bab bad bae bam bao bar bas bat bba bbb bbd bbe bbm bbo bbr bbs bbt bda bdb bdd bde bdm bdo bdr bds bdt be- bea beb bed bee bem beo ber bes bet bma bmb bmd bme bmm bmo bmr bms bmt boa bob bod boe bom boo bor bos bot bra brb brd bre brm bro brr brs brt bsa bsb bsd bse bsm bso bsr bss bst bta btb btd bte btm bto btr bts btt daa dab dad dae dam dao dar das dat dba dbb dbd dbe dbm dbo dbr dbs dbt dda ddb ddd dde ddm ddo ddr dds ddt de- dea deb ded dee dem deo der des det dma dmb dmd dme dmm dmo dmr dms dmt doa dob dod doe dom doo dor dos dot dra drb drd dre drm dro drr drs drt dsa dsb dsd dse dsm dso dsr dss dst dta dtb dtd dte dtm dto dtr dts dtt eaa eab ead eae eam eao ear eas eat eba ebb ebd ebe ebm ebo ebr ebs ebt ed- eda edb edd ede edm edo edr eds edt eea eeb eed eee eem eeo eer ees eet em- ema emb emd eme emm emo emr ems emt eo- eoa eob eod eoe eom eoo eor eos eot era erb erd ere erm ero err ers ert es- esa esb esd ese esm eso esr ess est eta etb etd ete etm eto etr ets ett m-o m-r maa mab mad mae mam mao mar mas mat mba mbb mbd mbe mbm mbo mbr mbs mbt mda mdb mdd mde mdm mdo mdr mds mdt mea meb med mee mem meo mer mes met mma mmb mmd mme mmm mmo mmr mms mmt moa mob mod moe mom moo mor mos mot mra mrb mrd mre mrm mro mrr mrs mrt msa msb msd mse msm mso msr mss mst mta mtb mtd mte mtm mto mtr mts mtt oaa oab oad oae oam oao oar oas oat ob- oba obb obd obe obm obo obr obs obt oda odb odd ode odm odo odr ods odt oea oeb oed oee oem oeo oer oes oet om- oma omb omd ome omm omo omr oms omt oo- ooa oob ood oom ooo oor oos oot or- ora orb ord ore orm oro orr ors ort os- osa osb osd ose osm oso osr oss ost ot- ota otb otd ote otm oto otr ots ott ra- raa rab rad rae ram rao rar ras rat rba rbb rbd rbe rbm rbo rbr rbs rbt rda rdb rdd rde rdm rdo rdr rds rdt re- rea reb red ree rem reo rer res ret rma rmb rmd rme rmm rmo rmr rms rmt roa rob rod roe rom roo ror ros rot rra rrb rrd rrm rrr rrs rrt rsa rsb rsd rse rsm rso rsr rss rst rta rtb rtd rte rtm rto rtr rts rtt saa sab sad sae sam sao sar sas sat sba sbb sbd sbe sbm sbo sbr sbs sbt sda sdb sdd sde sdm sdo sdr sds sdt se- sea seb sed see sem seo ser ses set sma smb smd sme smm smo smr sms smt soa sob sod soe som soo sor sos sot sr- sra srb srd sre srm sro srr srs srt ss- ssa ssb ssd sse ssm sso ssr sss sst sta stb std ste stm sto str sts stt taa tab tad tae tam tao tar tas tat tba tbb tbd tbe tbm tbo tbr tbs tbt tda tdb tdd tde tdm tdo tdr tds tdt te- tea teb ted tee tem teo ter tes tet tma tmb tmd tme tmm tmo tmr tms tmt to- toa tob tod toe tom too tor tos tot tra trb trd tre trm tro trr trs trt tsa tsb tsd tse tsm tso tsr tss tst tta ttb ttd tte ttm tto ttr tts ttt