-er a-a a-b aaa aab aad aae aam aao aar aas aau ab- aba abb abd abe abm abo abr abs abu ad- ada adb add ade adm ado adr ads adu aea aeb aed aee aem aeo aer aes aeu ama amb amd ame amm amo amr ams amu aoa aob aod aoe aom aoo aor aos aou ar- ara arb ard are arm aro arr ars aru as- asa asb asd ase asm aso asr ass asu au- aua aub aud aue aum auo aur aus b-u baa bab bad bae bam bao bar bas bau bba bbb bbd bbe bbm bbo bbr bbs bbu bda bdb bdd bde bdm bdo bdr bds bdu be- bea beb bed bee bem beo ber bes beu bma bmb bmd bme bmm bmo bmr bms bmu boa bob bod boe bom boo bor bos bou bra brb brd bre brm bro brr brs bru bsa bsb bsd bse bsm bso bsr bss bsu bua bub bud bue bum buo bur bus buu daa dab dad dae dam dao dar das dau dba dbb dbd dbe dbm dbo dbr dbs dbu dda ddb ddd dde ddm ddo ddr dds ddu de- dea deb ded dee dem deo der des deu dma dmb dmd dme dmm dmo dmr dms dmu doa dob dod doe dom doo dor dos dou dra drb drd dre drm dro drr drs dru dsa dsb dsd dse dsm dso dsr dss dsu dua dub dud due dum duo dur dus eaa eab ead eae eam eao ear eas eau eba ebb ebd ebe ebm ebo ebr ebs ebu ed- eda edb edd ede edm edo edr eds edu eea eeb eed eee eem eeo eer ees em- ema emb emd eme emm emo emr ems emu eo- eoa eob eod eoe eom eoo eor eos eou era erb erd ere erm ero err ers eru es- esa esb esd ese esm eso esr ess esu eu- eua eub eud eue eur eus m-o m-r maa mab mad mae mam mao mar mas mau mba mbb mbd mbe mbm mbo mbr mbs mbu mda mdb mdd mde mdm mdo mdr mds mdu mea meb med mee mem meo mer mes meu mma mmb mmd mme mmm mmo mmr mms mmu moa mob mod moe mom moo mor mos mou mra mrb mrd mre mrm mro mrr mrs mru msa msb msd mse msm mso msr mss msu mua mub mud mue mum mur mus muu oaa oab oad oae oam oao oar oas oau ob- oba obb obd obe obm obo obr obs obu oda odb odd ode odm odo odr ods odu oea oeb oed oee oem oeo oer oes om- oma omb omd ome omm omo omr oms omu oo- ooa oob ood oom ooo oor oos or- ora orb ord ore orm oro orr ors oru os- osa osb osd ose osm oso osr oss osu ou- oua oud oue oum ouo our ous ra- raa rab rad rae ram rao rar ras rau rba rbb rbd rbe rbm rbo rbr rbs rbu rda rdb rdd rde rdm rdo rdr rds rdu re- rea reb red ree rem reo rer res reu rma rmb rmd rme rmm rmo rmr rms roa rob rod roe rom roo ror ros rou rra rrb rrd rrm rrr rrs rru rsa rsb rsd rse rsm rso rsr rss rsu rua rub rud rue rum ruo rur rus ruu saa sab sad sae sam sao sar sas sau sba sbb sbd sbe sbm sbo sbr sbs sbu sda sdb sdd sde sdm sdo sdr sds sdu se- sea seb sed see sem seo ser ses seu sma smb smd sme smm smo smr sms smu soa sob sod soe som soo sor sos sou sr- sra srb srd sre srm sro srr srs ss- ssa ssb ssd sse ssm sso ssr sss ssu sua sub sud sue sum suo sur sus suu ua- uaa uab uad uae uam uao uar uas uau uba ubb ube ubo ubr ubs ubu uda udb udd ude udm udo udr uds udu uea ueb ued uee uem uer ues um- uma umb umd ume umm umo umr ums umu uoa uob uod uoe uom uoo uor uos ur- ura urb urd ure urm uro urr urs uru usa usb usd use usm uso usr uss usu uua uue uum uur uus uuu