-er a-a a-b a-i a-t aaa aab aad aae aai aam aao aar aas aat ab- aba abb abd abe abi abm abo abr abs abt ad- ada adb add ade adi adm ado adr ads adt aea aeb aed aee aei aem aeo aer aes aet ai- aia aib aid aie aii aim aio air ais ait ama amb amd ame ami amm amo amr ams amt aoa aob aod aoe aoi aom aoo aor aos aot ar- ara arb ard are ari arm aro arr ars art as- asa asb asd ase asi asm aso asr ass ast at- ata atb atd ate ati atm ato atr ats att baa bab bad bae bai bam bao bar bas bat bba bbb bbd bbe bbi bbm bbo bbr bbs bbt bda bdb bdd bde bdi bdm bdo bdr bds bdt be- bea beb bed bee bei bem beo ber bes bet bi- bia bib bid bie bii bim bio bir bis bit bma bmb bmd bme bmi bmm bmo bmr bms bmt boa bob bod boe boi bom boo bor bos bot bra brb brd bre bri brm bro brr brs brt bsa bsb bsd bse bsi bsm bso bsr bss bst bta btb btd bte bti btm bto btr bts btt daa dab dad dae dai dam dao dar das dat dba dbb dbd dbe dbi dbm dbo dbr dbs dbt dda ddb ddd dde ddi ddm ddo ddr dds ddt de- dea deb ded dee dei dem deo der des det di- dia dib did die dii dim dio dir dis dit dma dmb dmd dme dmi dmm dmo dmr dms dmt doa dob dod doe doi dom doo dor dos dot dra drb drd dre dri drm dro drr drs drt dsa dsb dsd dse dsi dsm dso dsr dss dst dta dtb dtd dte dti dtm dto dtr dts dtt eaa eab ead eae eai eam eao ear eas eat eba ebb ebd ebe ebi ebm ebo ebr ebs ebt ed- eda edb edd ede edi edm edo edr eds edt eea eeb eed eee eem eeo eer ees eet eia eib eid eie eii eim eio eir eis eit em- ema emb emd eme emi emm emo emr ems emt eo- eoa eob eod eoe eoi eom eoo eor eos eot era erb erd ere eri erm ero err ers ert es- esa esb esd ese esi esm eso esr ess est eta etb etd ete eti etm eto etr ets ett i-d ia- iaa iab iad iae iai iam iao iar ias iat iba ibb ibd ibe ibi ibm ibo ibr ibs ibt ida idb idd ide idi idm ido idr ids idt ie- iea ied iee iei iem ier ies iet iia iib iid iie iii iim iio iir iis iit im- ima imb imd ime imi imm imo ims imt io- ioa iob iod ioe ioi iom ioo ior ios iot ir- ira irb ird ire iri irm iro irr irs irt is- isa isb isd ise isi ism iso isr iss ist ita itb itd ite iti itm ito its itt m-o m-r maa mab mad mae mai mam mao mar mas mat mba mbb mbd mbe mbi mbm mbo mbr mbs mbt mda mdb mdd mde mdi mdm mdo mdr mds mdt mea meb med mee mei mem meo mer mes met mi- mia mib mid mie mii mim mio mir mis mit mma mmb mmd mme mmi mmm mmo mmr mms mmt moa mob mod moe moi mom moo mor mos mot mra mrb mrd mre mri mrm mro mrr mrs mrt msa msb msd mse msi msm mso msr mss mst mta mtb mtd mte mti mtm mto mtr mts mtt o-i oaa oab oad oae oai oam oao oar oas oat ob- oba obb obd obe obi obm obo obr obs obt oda odb odd ode odi odm odo odr ods odt oea oeb oed oee oei oem oeo oer oes oet oia oib oid oie oii oim oio oir ois oit om- oma omb omd ome omi omm omo omr oms omt oo- ooa oob ood ooi oom ooo oor oos oot or- ora orb ord ore ori orm oro orr ors ort os- osa osb osd ose osi osm oso osr oss ost ot- ota otb otd ote oti otm oto otr ots ott ra- raa rab rad rae rai ram rao rar ras rat rba rbb rbd rbe rbi rbm rbo rbr rbs rbt rda rdb rdd rde rdi rdm rdo rdr rds rdt re- rea reb red ree rei rem reo rer res ret ria rib rid rie rii rim rio rir ris rit rma rmb rmd rme rmi rmm rmo rmr rms rmt roa rob rod roe roi rom roo ror ros rot rra rrb rrd rri rrm rrr rrs rrt rsa rsb rsd rse rsi rsm rso rsr rss rst rta rtb rtd rte rti rtm rto rtr rts rtt saa sab sad sae sai sam sao sar sas sat sba sbb sbd sbe sbi sbm sbo sbr sbs sbt sda sdb sdd sde sdi sdm sdo sdr sds sdt se- sea seb sed see sei sem seo ser ses set sia sib sid sie sii sim sio sir sis sit sma smb smd sme smi smm smo smr sms smt soa sob sod soe soi som soo sor sos sot sr- sra srb srd sre sri srm sro srr srs srt ss- ssa ssb ssd sse ssi ssm sso ssr sss sst sta stb std ste sti stm sto str sts stt taa tab tad tae tai tam tao tar tas tat tba tbb tbd tbe tbi tbm tbo tbr tbs tbt tda tdb tdd tde tdi tdm tdo tdr tds tdt te- tea teb ted tee tei tem teo ter tes tet tia tib tid tie tii tim tio tir tis tit tma tmb tmd tme tmi tmm tmo tmr tms tmt to- toa tob tod toe toi