a-a a-b a-c a-t aaa aab aac aam aao aar aat ab- aba abb abc abm abo abr abt ac- aca acb acc acm aco acr act ama amb amc amm amo amr amt aoa aob aoc aom aoo aor aot ar- ara arb arc arm aro arr art at- ata atb atc atm ato atr att baa bab bac bam bao bar bat bba bbb bbc bbm bbo bbr bbt bca bcb bcc bcm bco bcr bct bma bmb bmc bmm bmo bmr bmt boa bob boc bom boo bor bot bra brb brm bro brr brt bta btb btc btm bto btr btt c-- caa cab cac cam cao car cat cba cbb cbc cbm cbo cbr cbt cca ccb ccc ccm cco ccr cct cma cmb cmc cmm cmo cmr cmt co- coa cob coc com coo cor cot cra crb crc crm cro crr crt cta ctb ctc ctm cto ctr ctt m-o m-r maa mab mac mam mao mar mat mba mbb mbc mbm mbo mbr mbt mc- mca mcb mcc mcm mco mcr mct mma mmb mmc mmm mmo mmr mmt moa mob moc mom moo mor mot mra mrb mrc mrm mro mrr mrt mta mtb mtc mtm mto mtr mtt oaa oab oac oam oao oar oat ob- oba obb obc obm obo obr obt oc- oca ocb occ ocm oco ocr oct om- oma omb omc omm omo omr omt oo- ooa oob ooc oom ooo oor oot or- ora orb orc orm oro orr ort ot- ota otb otc otm oto otr ott ra- raa rab rac ram rao rar rat rba rbb rbc rbm rbo rbr rbt rca rcb rcc rcm rco rcr rct rma rmb rmc rmm rmo rmr rmt roa rob roc rom roo ror rot rra rrb rrc rrm rrr rrt rta rtb rtc rtm rto rtr rtt taa tab tac tam tao tar tat tba tbb tbc tbm tbo tbr tbt tca tcb tcc tcm tco tcr tct tma tmb tmc tmm tmo tmr tmt to- toa tob toc tom too tor tot tra trb trc trm tro trr trt tta ttb ttc ttm tto ttr ttt

aaaa aaab aaac aaam aaar aaba aabb aabc aabm aabt aaca aacb aacc aacm aaco aacr aact aama aamb aamc aamo aamr aaoo aara aarc aarm aaro aart aata aatc aatt abaa abab abac abam abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abcr abct abma abmb abmc abmt aboa abob aboo abor abot abra abrc abro abta ac-t acaa acab acac acar acat acba acca accc accm acco acct acma acmc acoa acom acor acot acr- acra acrc acrm acro acrr acta actc acto actt amaa amac amam amar amat amb- amba ambo ambr amca amcc amco amm- amma ammo amob amoc amoo amor amot amra amrc amro amta amtc amto aoba aoca aoma aora aorb aort aotc arab arac aram arar arat arba arc- arca arcm arco arct arma armc armm armo armt aroa arob arom aroo aror arr- arra arrc arro arrr arrt arta artc arto artr at-t ataa atab atac atar atat atca atcc atco atcr atm- atma atmo atob atoc atom ator atot atra atrc atrm atro atta atto attr baaa baam baar baat baba babb babm babo babr bac- baca bacc baco bact bama bamb bamc bamm bar- bara barb barc barm baro barr bart bata batc bato batt bbbb bbcm bbrc bcaa bcam bcar bcat bcbc bcca bccc bccm bcma bcor bcra bctc bmaa bmoc bmtc boab boac boar boat boba bobb bobo boca bocm boco boma bomb bomt boob booc boom boor boot bor- bora borm boro borr bort bota botb boto bott brab brac bram brao brat brca brcb brmc broa brob broc brom broo bror brot brrm brrr brtc btaa btcc btob btor btrc btrt bttb c-bo caaa caab caac caam caat caba cabo cac- caca cacc cacm caco cacr cama camb camc camm camo camt caor cara carb carc carm caro carr cart cat- cata catb catc catm cato catt cbac cbar cbat cbbc cbca cbcc cbcm cbcr cbct cbot cbrm cbrt cbta cbtc ccaa ccab ccac ccam ccar ccat ccba ccbc ccca cccb cccc cccm ccma ccmb ccmc ccmm ccob ccoc ccom ccra ccrc ccrt cctb cctc cctt cmaa cmac cmba cmbc cmcc cmmb cmmc cmoc cmot cmra cmrr cmta cmtc coat coba cobb cobo coca coco coct com- coma comb comc comm como comr coob coom coot cor- cora corb corc corm coro corr cort cota cotb cotc coto cott crab crac cram crar crat crbc crca crcc crcr crmb crmo crob croc crom croo cror crot crrt crtc crtm ctab ctba ctca ctma ctmo ctor ctot ctrc ctrm ctta maaa maac maam maar maat maba mabo mac- maca macb macc maco macr mact mama mamc mamo maoc maor mar- mara marc marm maro marr mart mata matc mato matr matt mbac mbam mbba mbca mbta mcaa mcac mcat mcba mcbc mcca mccc mcmc mcmt mcot mcrc mctc mmaa mmab mmac mmar mmcc mmcm mmct mmmc mmmm mmor mmrc moaa moab moac moam moar moat moba mobb mobo moca moco moma momo mooa moob mooc moor moot mora morb moro mort mota motb motm moto mott mr-c mrac mrbb mrbm mrca mrcb mrcc mrmc mrrc mrta mrtm mrtt mtaa mtab mtac mtbc mtbo mtcr mtoa mtom mtor mtrc mtrr mttr oama oara obba obbo obor obot obra obro ocab ocac ocam ocat ocbc occa occc occt ocma ocom ocra ocro ocrr oct- octa octo omac omam omao omar ombo omca omma omo- omoa omoo omor omra omro ooaa ooba oocr ooma oooo oora oort ootb orab orac oram orao orar orat orba orbb orbo orca orco orma ormo oro- orom oror orot orra orro orta ortc orto otac otar otma oto- otoo otor otra otro otta otto raab raam raat raba rabb rabo rac- raca racc raco ract rama ramb ramm ramo raob raoc raom rara rarb raro rata rato ratt rbbb