a-be aaaa aaab aaac aaae aaal aaap aaba aabb aabc aabl aabp aabt aaca aacb aacc aace aacl aacp aact aaea aaec aaep aala aalc aale aall aapa aapc aapl aapt aata aatc aatt abaa abab abac abae abal abap abat abax abb- abba abbb abbe abbt abca abcb abcc abcl abcp abct abec abee abel abet abla able abpa abpc abpp abta ac-t acaa acab acac acae acap acat acba acbl acca accc acce accp acct ace- acea acec acel acet acla aclc acle acpa acpe acpt acta actc acte actl actt aeac aeap aecb aecl aect aela aelc aelp aeta aetc aett aetx al-p alaa alac alae alal alap alat alb- alba albc albe alca alcc alce alea alec alee alep alet alex all- alla alle alll alpa alpe alpl alta alte altx alxa apac apal apap apat apax apba apca apcb apcc apea apec apel apep apet apex apl- apla aple aplp aplx appa appc appl appt appx apta aptc apte aptt aptx at-l at-t at-x ataa atab atac atae atal atap atat atax atca atcc atcl atea atec atee atel atep atex atla atle atta atte attp axal axat axce axel axle ba-x baaa baal baat baba babb babe bac- baca bacc bace bact bael bala balc bale ball balt bapa bapc bape bapp bapt bata batc bate batt baxt bbbb bbeb bbet bblb bcaa bcap bcat bcbc bcbp bcca bccc bccl bcec bcet bcpl bcpp bctc beal beap beat beba bebb bebe beca beeb beel beep beet bela bele bell belp belt beta betc bete bett blaa blab blac blae blat blbt blea bleb blee blet bpcp bpea bpel btaa btbp btcc btcl btcx btec btex btla btlp bttb caaa caab caac caal caap caat caba cabe cac- caca cacc cace caec caex cala calc cale call calp calt calx capa capb capc cape capp capt capx cat- cata catb catc cate catt caxa cbac cbal cbat cbax cbbc cbca cbcc cbce cbcl cbcp cbct cbea cbec cbee cbet cblb cblc cbpc cbpp cbta cbtc cbtl cbxa ccaa ccab ccac ccap ccat ccba ccbc ccca cccb cccc cccl cccp ccee ccel ccla cclc cclx ccpa ccpe ccpl ccpp cctb cctc cctl cctt ccxl ceac ceal ceat ceba cebp cec- ceca cece cecp cect ceeb ceec ceel cel- cela celc cele cell celt cepa cepc cepe cepp cept cet- ceta cete cetp cexe clab clap clat clea clec clee clep clet clpb clpp clpx cltb cltc clxx cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cplc cppa cptp ctab ctae ctal ctba ctca ctcp ctec ctep ctle ctpp ctta cxxx e-cl e-la eaba eaca eacc eaec eala ealc eale eapc eapp eata eate eaxl ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecla eclt ecpa ecpp ect- ecta ectc eeca eeea eeee eele eeta eetc eete eext el-b el-p elab elac elal elat elba elbe elca elcb elce elea elec elee elet elex ella elle elpe elta elte epaa epac epcc epec epee eple epll eppa eppc eppp epta epte epxp etal etap etat etbc etcc etec etee etel etla etta ette exa- excl exec exel expt exta exte extl laaa laac laal laap laat laax laba labe laca lacc lace lacl lacp lact lael laet lala lale lall lapa lapb lapc lape lapp lapt lata latc late latt laxa laxe lbcc lcac lcat lcbc lcca lccc lcce lcpa lcpc lcpl lctl leaa leal leap leat leba leca lece lect leea leel leep leet lela lele lell lepa lepe lepp lept leta lete lett lexa lext lexx llat llcc llet lllc llll lpac lpec lpla lppl lptb ltac ltae ltap ltbl ltcc ltee ltpa lttc lxxx paal paap paat paba pabt pabx paca pace pact pacx paea paec paep pala pale pall palp palt papa papb pape papp pata pate patt pbac pbcc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pccl pcea pcep pcll pcpb pcpp pcte peab peac peal peap peat peax peba pebl peca pece pecl pect peec peel peep peet pel- pela pelb pele pell pelt pepa pepe peta pete pett plaa plab plac plap plat plax plcc plce ple- plea pleb plec plee plet plex plpa plpp pltt ppac ppal ppap ppcc pple pppa pppp ppta pptt ptab ptal ptbl ptca ptcc ptcl pttc taa- taal taat taba tabb tabc tabe tabl taca tacc tace tacl tact taec tael tala talc tale tall talx tapa tape tapp tapt tata tatb tate tatt tax- taxa taxe taxt tbca tbcb tbcc tbce tbta tbtp tcap tcca tccc tcep tclx tcpa tctc teac teal teat teba teca tecl tect teec teel teet tel- tela telc tele tell telt tepa tepe tepp teta tete tett tetx texa text tlac tlpa tltx tpac tpap tpcp tppa tppp tpte tptp ttab ttbb ttcp tttt txaa xace xacl xact xala xall xate xbee xbel xcal xcat xcbl xcel xela xexe xlet xlpe xpac xpax xpcc xtal xtea xtep xxxx