a-a a-b a-t aaa aab aam aao aap aar aat ab- aba abb abm abo abp abr abt ama amb amm amo amp amr amt aoa aob aom aoo aop aor aot ap- apa apb apm apo app apr apt ar- ara arb arm aro arp arr art at- ata atb atm ato atp atr att b-p baa bab bam bao bap bar bat bba bbb bbm bbo bbp bbr bbt bma bmb bmm bmo bmp bmr bmt boa bob bom boo bop bor bot bpa bpb bpm bpo bpp bpr bpt bra brb brm bro brp brr brt bta btb btm bto btp btr btt m-o m-r maa mab mam mao map mar mat mba mbb mbm mbo mbp mbr mbt mma mmb mmm mmo mmp mmr mmt moa mob mom moo mop mor mot mpa mpb mpm mpo mpp mpr mpt mra mrb mrm mro mrp mrr mrt mta mtb mtm mto mtp mtr mtt oaa oab oam oao oap oar oat ob- oba obb obm obo obp obr obt om- oma omb omm omo omp omr omt oo- ooa oob oom ooo oop oor oot op- opa opb opm opo opp opr opt or- ora orb orm oro orp orr ort ot- ota otb otm oto otp otr ott p-p paa pab pam pao pap par pat pba pbb pbm pbo pbp pbr pbt pma pmb pmm pmo pmp pmr pmt poa pob pom poo pop por pot ppa ppb ppm ppo ppp ppr ppt pra prb prm pro prp prr prt pt- pta ptb ptm pto ptp ptr ptt ra- raa rab ram rao rap rar rat rba rbb rbm rbo rbp rbr rbt rma rmb rmm rmo rmp rmr rmt roa rob rom roo rop ror rot rpa rpb rpm rpo rpp rpr rpt rra rrb rrm rrp rrr rrt rta rtb rtm rto rtp rtr rtt taa tab tam tao tap tar tat tba tbb tbm tbo tbp tbr tbt tma tmb tmm tmo tmp tmr tmt to- toa tob tom too top tor tot tpa tpb tpm tpo tpp tpr tpt tra trb trm tro trp trr trt tta ttb ttm tto ttp ttr ttt

aaaa aaab aaam aaap aaar aaba aabb aabm aabp aabt aama aamb aamo aamp aamr aaoo aapa aapm aapo aapt aara aarm aaro aarp aart aata aatt abaa abab abam abap abar abat abb- abba abbb abbo abbr abbt abma abmb abmt aboa abob aboo abor abot abpa abpm abpp abpr abra abro abta amaa amam amap amar amat amb- amba ambo ambr amm- amma ammo amob amoo amor amot ampa ampm ampo ampt amra amro amta amto amtp aoba aoma aopo aora aorb aort apam apao apap apar apat apba apbr apma apo- apom apoo apop apor apot appa appr appt apra apro aprt apta aptt arab aram arap arar arat arba arma armm armo armt aroa arob arom aroo aror arpa arr- arra arro arrr arrt arta arto artr at-t ataa atab atap atar atat atm- atma atmo atmp atob atom atop ator atot atpr atra atrm atro atrp atta atto attp attr baaa baam baar baat baba babb babm babo babr bama bamb bamm bamp bapa bapp bapt bar- bara barb barm baro barr bart bata bato batt bbbb bbpr bmaa bmop bmpt boab boar boat boba bobb bobo boma bomb bomp bomt boob boom boop boor boot bopa bopp bor- bora borm boro borr bort bota botb boto bott bpot brab bram brao brat broa brob brom broo bror brot brrm brrr btaa btbp btob btor btrt bttb maaa maam maap maar maat maba mabo mama mamo mamp maor mapa mapo mapp mapr mar- mara marm maro marr mart mata mato matr matt mbam mbba mbta mmaa mmab mmap mmar mmmm mmor mmpa mmpr mmrp moaa moab moam moap moar moat moba mobb mobo moma momo mooa moob moop moor moot mopa mopp mora morb moro mort mota motb motm moto mott mpaa mpao mppp mpro mprp mpta mptp mrap mrbb mrbm mrpa mrta mrtm mrtt mtaa mtab mtap mtbo mtoa mtom mtor mtpa mtrr mttr oama oamp oara obba obbo obor obot obra obro omam omao omap omar ombo omma omo- omoa omoo omor ompa ompt omra omro ooaa ooba ooma oooo oora oort ootb ootp opap opar opo- opor oppa oppo opra opto orab oram orao orar orat orba orbb orbo orma ormo oro- orom oror orot orra orro orta orto otap otar otma oto- otoo otor otpp otra otro otta otto paap paar paat paba pabt pam- pama pamb pamm pamo pamp papa papb papp papr par- para parm paro parp parr part pata pato patr patt pbar pbmr pbpa pmaa pmat pmbr pmma pmmp pmpm pmpo pmrt poar poat poba pobo poma pomo pomp poop poor poot pop- popa popo popp popt pora porb poro porr port pota poto pott ppap ppar ppoa pppa pppo pppp pprm ppta pptt pram prao prar prat pro- proa prob prom proo prop prot prrm prtm prtp prtr ptab ptmp ptop raab raam raat raba rabb rabo rama ramb ramm ramo ramp raob raom raop rapa rapm rapp rapt rara rarb raro rata rato ratp ratt rbbb rbbr rmrp roab roam roap roar roat rob- roba robb robo robt roma romb romm romo romp roob room roop roor root ropa ropo rora roro rort rota roto rotr rott rpob rpta rrat rrmp rrrr rtmp rtpa rttp t-mo taa- taar taat taba tabb tabo tama tamm tamo tamp taoa taom taor tapa tapo tapp tapr tapt tara tarb tarm taro tarp tarr tart tata tatb tato tatr tatt tbar tbrb tbta tbtp tmaa tmap tmbr tmro tmtt toab toam toat toba tobo tobt toma tomb tomm tomo tomp tomt tooa toom toor toot top- topa topo topp topt tora torm toro torp torr tort tota totm toto totr tott tpap tpmt tppa tppp tppr tptp tptr traa trab tram trao trap trat trma trmb troa trom troo trop trot trpa trpm trpp trra trtr ttab