-er a-a a-b aaa aab aad aae aah aam aao aar aas ab- aba abb abd abe abh abm abo abr abs ad- ada adb add ade adh adm ado adr ads aea aeb aed aee aeh aem aeo aer aes aha ahb ahd ahe ahh ahm aho ahr ahs ama amb amd ame amh amm amo amr ams aoa aob aod aoe aoh aom aoo aor aos ar- ara arb ard are arh arm aro arr ars as- asa asb asd ase ash asm aso asr ass baa bab bad bae bah bam bao bar bas bba bbb bbd bbe bbh bbm bbo bbr bbs bda bdb bdd bde bdh bdm bdo bdr bds be- bea beb bed bee beh bem beo ber bes bha bhb bhd bhe bhh bhm bho bhr bhs bma bmb bmd bme bmh bmm bmo bmr bms boa bob bod boe boh bom boo bor bos bra brb brd bre brh brm bro brr brs bsa bsb bsd bse bsh bsm bso bsr bss daa dab dad dae dah dam dao dar das dba dbb dbd dbe dbh dbm dbo dbr dbs dda ddb ddd dde ddh ddm ddo ddr dds de- dea deb ded dee deh dem deo der des dh- dha dhb dhd dhe dhh dhm dho dhr dhs dma dmb dmd dme dmh dmm dmo dmr dms doa dob dod doe doh dom doo dor dos dra drb drd dre drm dro drr drs dsa dsb dsd dse dsh dsm dso dsr dss eaa eab ead eae eah eam eao ear eas eba ebb ebd ebe ebh ebm ebo ebr ebs ed- eda edb edd ede edh edm edo edr eds eea eeb eed eee eem eeo eer ees eha ehb ehd ehe ehh ehm eho ehr ehs em- ema emb emd eme emh emm emo emr ems eo- eoa eob eod eoe eoh eom eoo eor eos era erb erd ere erh erm ero err ers es- esa esb esd ese esh esm eso esr ess haa hab had hae hah ham hao har has hba hbb hbd hbe hbh hbm hbo hbr hbs hda hdb hdd hde hdh hdm hdo hdr hds he- hea heb hed hee heh hem heo her hes hha hhb hhd hhe hhh hhm hho hhr hhs hma hmb hmd hme hmh hmm hmo hmr hms hoa hob hod hoe hoh hom hoo hor hos hr- hra hrb hrd hre hrh hrm hro hrr hrs hsa hsb hsd hse hsh hsm hsr hss m-o m-r maa mab mad mae mah mam mao mar mas mba mbb mbd mbe mbh mbm mbo mbr mbs mda mdb mdd mde mdh mdm mdo mdr mds mea meb med mee meh mem meo mer mes mha mhd mhh mhm mho mhr mhs mma mmb mmd mme mmh mmm mmo mmr mms moa mob mod moe moh mom moo mor mos mra mrb mrd mre mrh mrm mro mrr mrs msa msb msd mse msh msm mso msr mss oaa oab oad oae oah oam oao oar oas ob- oba obb obd obe obh obm obo obr obs oda odb odd ode odh odm odo odr ods oea oeb oed oee oeh oem oeo oer oes oha ohd ohe ohh ohm oho ohr ohs om- oma omb omd ome omh omm omo omr oms oo- ooa oob ood ooh oom ooo oor oos or- ora orb ord ore orh orm oro orr ors os- osa osb osd ose osh osm oso osr oss ra- raa rab rad rae rah ram rao rar ras rba rbb rbd rbe rbh rbm rbo rbr rbs rda rdb rdd rde rdh rdm rdo rdr rds re- rea reb red ree reh rem reo rer res rh- rha rhb rhd rhe rhh rhm rho rhr rhs rma rmb rmd rme rmh rmm rmo rmr rms roa rob rod roe roh rom roo ror ros rra rrb rrd rrh rrm rrr rrs rsa rsb rsd rse rsh rsm rso rsr rss saa sab sad sae sah sam sao sar sas sba sbb sbd sbe sbh sbm sbo sbr sbs sda sdb sdd sde sdh sdm sdo sdr sds se- sea seb sed see seh sem seo ser ses sh- sha shb shd she shh shm sho shr shs sma smb smd sme smh smm smo smr sms soa sob sod soe soh som soo sor sos sr- sra srb srd sre srh srm sro srr srs ss- ssa ssb ssd sse ssh ssm sso ssr sss