a-a a-b a-c a-t aaa aab aac aam aao aar aas aat ab- aba abb abc abm abo abr abs abt ac- aca acb acc acm aco acr acs act ama amb amc amm amo amr ams amt aoa aob aoc aom aoo aor aos aot ar- ara arb arc arm aro arr ars art as- asa asb asc asm aso asr ass ast at- ata atb atc atm ato atr ats att baa bab bac bam bao bar bas bat bba bbb bbc bbm bbo bbr bbs bbt bca bcb bcc bcm bco bcr bcs bct bma bmb bmc bmm bmo bmr bms bmt boa bob boc bom boo bor bos bot bra brb brm bro brr brs brt bsa bsb bsc bsm bso bsr bss bst bta btb btc btm bto btr bts btt c-- caa cab cac cam cao car cas cat cba cbb cbc cbm cbo cbr cbs cbt cca ccb ccc ccm cco ccr ccs cct cma cmb cmc cmm cmo cmr cms cmt co- coa cob coc com coo cor cos cot cra crb crc crm cro crr crs crt csa csb csc csm cso csr css cst cta ctb ctc ctm cto ctr cts ctt m-o m-r maa mab mac mam mao mar mas mat mba mbb mbc mbm mbo mbr mbs mbt mc- mca mcb mcc mcm mco mcr mcs mct mma mmb mmc mmm mmo mmr mms mmt moa mob moc mom moo mor mos mot mra mrb mrc mrm mro mrr mrs mrt msa msb msc msm mso msr mss mst mta mtb mtc mtm mto mtr mts mtt oaa oab oac oam oao oar oas oat ob- oba obb obc obm obo obr obs obt oc- oca ocb occ ocm oco ocr ocs oct om- oma omb omc omm omo omr oms omt oo- ooa oob ooc oom ooo oor oos oot or- ora orb orc orm oro orr ors ort os- osa osb osc osm oso osr oss ost ot- ota otb otc otm oto otr ots ott ra- raa rab rac ram rao rar ras rat rba rbb rbc rbm rbo rbr rbs rbt rca rcb rcc rcm rco rcr rcs rct rma rmb rmc rmm rmo rmr rms rmt roa rob roc rom roo ror ros rot rra rrb rrc rrm rrr rrs rrt rsa rsb rsc rsm rso rsr rss rst rta rtb rtc rtm rto rtr rts rtt saa sab sac sam sao sar sas sat sba sbb sbc sbm sbo sbr sbs sbt sca scb scc scm sco scr scs sct sma smb smc smm smo smr sms smt soa sob soc som soo sor sos sot sr- sra srb src srm sro srr srs srt ss- ssa ssb ssc ssm sso ssr sss sst sta stb stc stm sto str sts stt taa tab tac tam tao tar tas tat tba tbb tbc tbm tbo tbr tbs tbt tca tcb tcc tcm tco tcr tcs tct tma tmb tmc tmm tmo tmr tms tmt to- toa tob toc tom too tor tos tot tra trb trc trm tro trr trs trt tsa tsb tsc tsm tso tsr tss tst tta ttb ttc ttm tto ttr tts ttt

aaaa aaab aaac aaam aaar aaas aaba aabb aabc aabm aabt aaca aacb aacc aacm aaco aacr aacs aact aama aamb aamc aamo aamr aams aaoo aara aarc aarm aaro aars aart aasa aasc aasm aass aast aata aatc aatt abaa abab abac abam abar abas abat abb- abba abbb abbo abbr abbs abbt abca abcb abcc abcr abcs abct abma abmb abmc abms abmt aboa abob aboo abor abos abot abra abrc abro abrs abs- absa abss abta abts ac-t acaa acab acac acar acas acat acba acca accc accm acco accs acct acma acmc acms acoa acom acor acos acot acr- acra acrc acrm acro acrr acrs acsa acsc acsm acss acst acta actc acto acts actt amaa amac amam amar amas amat amb- amba ambo ambr ambs amca amcc amco amcs amm- amma ammo amob amoc amoo amor amos amot amra amrc amro amsa amsc amso amss amst amta amtc amto amts aoba aoca aocs aoma aora aorb aors aort aoss aotc arab arac aram arar aras arat arba arbs arc- arca arcm arco arcs arct arma armc armm armo arms armt aroa arob arom aroo aror aros arr- arra arrc arro arrr arrs arrt ars- arsa arsc arso arst arta artc arto artr arts asaa asab asac asam asao asar asas asat asba asbm asbo asc- asca ascb ascc asco ascr asct asma asmm asmr asms asmt asob asoc asom asor asos asot asra asrc asrm asro asrs assa assc asso assr asss asst asta astb astc astm asto astr asts at-t ataa atab atac atar atas atat atbs atca atcc atco atcr atcs atm- atma atmo atms atob atoc atom ator atos atot atra atrc atrm atro atsb atsc atst atta atto attr atts baaa baam baar baas baat baba babb babm babo babr babs bac- baca bacc baco bacs bact bama bamb bamc bamm bams baos bar- bara barb barc barm baro barr bars bart basa basc baso bass bast bata batc bato bats batt bbas bbbb bbbs bbcm bbrc bcaa bcam bcar bcas bcat bcbc bcbs bcca bccc bccm bccs bcma bcms bcor bcos bcra bcrs bcsa bcsc bcsm bcss bctc bcts bmaa bmoc bmtc bmts boab boac boar boas boat boba bobb bobo bobs boca bocm boco bocs boma bomb boms bomt boob booc boom boor boos boot bor- bora borm boro borr bors bort bosa bosc bosm boso boss bost bota botb boto bots bott brab brac bram brao bras brat brca brcb brmc broa brob broc brom broo bror bros brot brrm brrr brrs brsb brsr brst brtc bsaa bsac bsam bsas bsat bscs bsms bsmt bsos bsra bsrm bssc bssm bsts btaa btcc btcs btob btor btrc btrt btss bttb c-bo caaa caab caac caam caas caat caba cabo cabs cac- caca cacc cacm