a-a a-b a-c aaa aab aac aad aam aao aar aas ab- aba abb abc abd abm abo abr abs ac- aca acb acc acd acm aco acr acs ad- ada adb adc add adm ado adr ads ama amb amc amd amm amo amr ams aoa aob aoc aod aom aoo aor aos ar- ara arb arc ard arm aro arr ars as- asa asb asc asd asm aso asr ass baa bab bac bad bam bao bar bas bba bbb bbc bbd bbm bbo bbr bbs bca bcb bcc bcd bcm bco bcr bcs bda bdb bdc bdd bdm bdo bdr bds bma bmb bmc bmd bmm bmo bmr bms boa bob boc bod bom boo bor bos bra brb brd brm bro brr brs bsa bsb bsc bsd bsm bso bsr bss c-- caa cab cac cad cam cao car cas cba cbb cbc cbd cbm cbo cbr cbs cca ccb ccc ccd ccm cco ccr ccs cda cdb cdc cdd cdm cdo cdr cds cma cmb cmc cmd cmm cmo cmr cms co- coa cob coc cod com coo cor cos cra crb crc crd crm cro crr crs csa csb csc csd csm cso csr css daa dab dac dad dam dao dar das dba dbb dbc dbd dbm dbo dbr dbs dca dcb dcc dcd dcm dco dcr dcs dda ddb ddc ddd ddm ddo ddr dds dma dmb dmc dmd dmm dmo dmr dms doa dob doc dod dom doo dor dos dra drb drc drd drm dro drr drs dsa dsb dsc dsd dsm dso dsr dss m-o m-r maa mab mac mad mam mao mar mas mba mbb mbc mbd mbm mbo mbr mbs mc- mca mcb mcc mcd mcm mco mcr mcs mda mdb mdc mdd mdm mdo mdr mds mma mmb mmc mmd mmm mmo mmr mms moa mob moc mod mom moo mor mos mra mrb mrc mrd mrm mro mrr mrs msa msb msc msd msm mso msr mss oaa oab oac oad oam oao oar oas ob- oba obb obc obd obm obo obr obs oc- oca ocb occ ocd ocm oco ocr ocs oda odb odc odd odm odo odr ods om- oma omb omc omd omm omo omr oms oo- ooa oob ooc ood oom ooo oor oos or- ora orb orc ord orm oro orr ors os- osa osb osc osd osm oso osr oss ra- raa rab rac rad ram rao rar ras rba rbb rbc rbd rbm rbo rbr rbs rca rcb rcc rcd rcm rco rcr rcs rda rdb rdc rdd rdm rdo rdr rds rma rmb rmc rmd rmm rmo rmr rms roa rob roc rod rom roo ror ros rra rrb rrc rrd rrm rrr rrs rsa rsb rsc rsd rsm rso rsr rss saa sab sac sad sam sao sar sas sba sbb sbc sbd sbm sbo sbr sbs sca scb scc scd scm sco scr scs sda sdb sdc sdd sdm sdo sdr sds sma smb smc smd smm smo smr sms soa sob soc sod som soo sor sos sr- sra srb src srd srm sro srr srs ss- ssa ssb ssc ssd ssm sso ssr sss

a-do aaaa aaab aaac aaad aaam aaar aaas aaba aabb aabc aabd aabm aaca aacb aacc aacd aacm aaco aacr aacs aada aadc aads aama aamb aamc aamd aamo aamr aams aaoo aara aarc aard aarm aaro aars aasa aasc aasd aasm aass abaa abab abac abad abam abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abcd abcr abcs abda abdo abma abmb abmc abms aboa abob abod aboo abor abos abra abrc abro abrs abs- absa absd abss acaa acab acac acad acar acas acba acca accc accd accm acco accs acda acdb acdc acdm acds acma acmc acms acoa acod acom acor acos acr- acra acrc acrm acro acrr acrs acsa acsc acsd acsm acss adaa adab adac adad adam adao adar adas adba adbc adcc adcs adda addc addd addo addr adds adma admb admr adms adob adoc adod adoo ador ados adra adro adrs adsa adsm adso adsr adss amaa amac amad amam amar amas amb- amba ambo ambr ambs amca amcc amco amcs amda amdo amds amm- amma ammo amob amoc amod amoo amor amos amra amrc amro amsa amsc amsd amso amss aoba aoca aocs aoma aora aorb aors aosd aoss arab arac arad aram arar aras arba arbs arc- arca arcm arco arcs arda ardc ardm ardo ards arma armc armd armm armo arms aroa arob arod arom aroo aror aros arr- arra arrc arro arrr arrs ars- arsa arsc arsd arso asaa asab asac asad asam asao asar asas asba asbm asbo asc- asca ascb ascc asco ascr asda asdo asds asma asmd asmm asmr asms asob asoc asod asom asor asos asra asrc asrm asro asrs assa assc assd asso assr asss baaa baad baam baar baas baba babb babm babo babr babs bac- baca bacc baco bacs bada badb badd bado badr bads bama bamb bamc bamm bams baos bar- bara barb barc bard barm baro barr bars basa basc baso bass bbad bbas bbbb bbbs bbcm bbdd bbdo bbrc bcaa bcam bcar bcas bcbc bcbs bcca bccc bccm bccs bcda bcds bcma bcms bcor bcos bcra bcrs bcsa bcsc bcsm bcss bd-r bdbc bddc bdos bdrm bdsd bdsm bmaa bmdb bmoc boab boac boad boar boas boba bobb bobo bobs boca bocm boco bocs boda bodb bodo bods boma bomb boms boob booc bood boom boor boos bor- bora bord borm boro borr bors bosa bosc bosm boso boss brab brac brad bram brao bras brca brcb brda brdm brdo brds brmc broa brob broc brod brom broo bror bros brrm brrr brrs brsb brsr bsaa bsac bsam bsas bsbd bscs bsms bsod bsos bsra bsrd bsrm bssc bssd bssm c-bo c-cd caaa caab caac caam caas caba cabo cabs cac- caca cacc cacm caco cacr cada cadc cadd cadm cado cadr cads cama