-er a-a a-b a-t aaa aab aae aam aao aap aar aat ab- aba abb abe abm abo abp abr abt aea aeb aee aem aeo aep aer aet ama amb ame amm amo amp amr amt aoa aob aoe aom aoo aop aor aot ap- apa apb ape apm apo app apr apt ar- ara arb are arm aro arp arr art at- ata atb ate atm ato atp atr att b-p baa bab bae bam bao bap bar bat bba bbb bbe bbm bbo bbp bbr bbt be- bea beb bee bem beo bep ber bet bma bmb bme bmm bmo bmp bmr bmt boa bob boe bom boo bop bor bot bpa bpb bpe bpm bpo bpp bpr bpt bra brb bre brm bro brp brr brt bta btb bte btm bto btp btr btt eaa eab eae eam eao eap ear eat eba ebb ebe ebm ebo ebp ebr ebt eea eeb eee eem eeo eep eer eet em- ema emb eme emm emo emp emr emt eo- eoa eob eoe eom eoo eop eor eot ep- epa epb epe epm epo epp epr ept era erb ere erm ero erp err ert eta etb ete etm eto etp etr ett m-o m-r maa mab mae mam mao map mar mat mba mbb mbe mbm mbo mbp mbr mbt mea meb mee mem meo mep mer met mma mmb mme mmm mmo mmp mmr mmt moa mob moe mom moo mop mor mot mpa mpb mpe mpm mpo mpp mpr mpt mra mrb mre mrm mro mrp mrr mrt mta mtb mte mtm mto mtp mtr mtt oaa oab oae oam oao oap oar oat ob- oba obb obe obm obo obp obr obt oea oeb oee oem oeo oep oer oet om- oma omb ome omm omo omp omr omt oo- ooa oob oom ooo oop oor oot op- opa opb ope opm opo opp opr opt or- ora orb ore orm oro orp orr ort ot- ota otb ote otm oto otp otr ott p-p paa pab pae pam pao pap par pat pba pbb pbe pbm pbo pbp pbr pbt pea peb pee pem peo pep per pet pma pmb pme pmm pmo pmp pmr pmt poa pob poe pom poo pop por pot ppa ppb ppe ppm ppo ppp ppr ppt pra prb pre prm pro prp prr prt pt- pta ptb pte ptm pto ptp ptr ptt ra- raa rab rae ram rao rap rar rat rba rbb rbe rbm rbo rbp rbr rbt re- rea reb ree rem reo rep rer ret rma rmb rme rmm rmo rmp rmr rmt roa rob roe rom roo rop ror rot rpa rpb rpe rpm rpo rpp rpr rpt rra rrb rrm rrp rrr rrt rta rtb rte rtm rto rtp rtr rtt taa tab tae tam tao tap tar tat tba tbb tbe tbm tbo tbp tbr tbt te- tea teb tee tem teo tep ter tet tma tmb tme tmm tmo tmp tmr tmt to- toa tob toe tom too top tor tot tpa tpb tpe tpm tpo tpp tpr tpt tra trb tre trm tro trp trr trt tta ttb tte ttm tto ttp ttr ttt

a-be aaaa aaab aaae aaam aaap aaar aaba aabb aabm aabp aabt aaea aaem aaep aama aamb aame aamo aamp aamr aaoe aaoo aapa aapm aapo aapt aara aare aarm aaro aarp aart aata aatt abaa abab abae abam abap abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet abma abmb abmt aboa abob aboo abor abot abpa abpm abpp abpr abra abro abta aeap aeer aemt aeom aer- aera aero aeta aeto aetr aett amaa amae amam amap amar amat amb- amba ambe ambo ambr amee amer amet amm- amma amme ammo amob amoo amor amot ampa ampe ampm ampo ampt amra amro amta amte amto amtp aoba aoma aopo aora aorb aort apam apao apap apar apat apba apbr apea apem apep aper apet apma apo- apoe apom apoo apop apor apot appa appr appt apra apre apro aprt apta apte aptt arab arae aram arap arar arat arba arbe area aree arem areo arep aret arma arme armm armo armt aroa arob aroe arom aroo aror arpa arpe arr- arra arre arro arrr arrt arta arte arto artr at-t ataa atab atae atap atar atat atea atee atem ateo atep ater atm- atma atme atmo atmp atob atoe atom atop ator atot atpr atra atre atrm atro atrp atta atte atto attp attr baaa baam baar baat baba babb babe babm babo babr baer bama bamb bame bamm bamp bapa bape bapp bapt bar- bara barb bare barm baro barr bart bata bate bato batt bbbb bbeb bbet bbpr beam beap bear beat beba bebb bebe bebo beeb beem beep beer beet bema beme beo- beor beot bepo bera bere berm bero berr bert beta bete beto bett bmaa bmep bmop bmpt boab boar boat boba bobb bobe bobo boea boee boeo boep boer boet boma bomb bome bomp bomt boob booe boom boop boor boot bopa bope bopp bor- bora bore borm boro borr bort bota botb bote boto bott bpea bpoe bpot brab brae bram brao brat brea breb bree brem breo brep brer bret broa brob broe brom broo bror brot brrm brrr btaa btbp btob btor btrt bttb eaba eama eame eaom eaop eapp eara earb eare earo earp eart eata eate ebam ebba ebbo ebbr eber eboe eboo ebor ebpo ebro eeea eeee eemo eera eero eeta eete emae emam emar emba embe embo embr emer emet emma emme emor empa empe empt emra emre emta emte emtp eora eore eota eoto epaa epam epbm epee eper epmo epor epot eppa eppo eppp epra eprb epro eprp epta epte eram erap erat erba erbb erbe ereb erem erer eret erma erme ermo erob eroe eroo erpa erpe erra erre erro erta etam etap etat etbr etee etem eter etoe etra etre etrm etro