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 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 al-p alaa alac alae alal alap alat alb- alba albc albe alca alcc alce alea alec alee alep alet all- alla alle alll alpa alpe alpl alta alte apac apal apap apat apba apca apcb apcc apea apec apel apep apet apl- apla aple aplp appa appc appl appt apta aptc apte aptt at-l at-t ataa atab atac atae atal atap atat atca atcc atcl atea atec atee atel atep atla atle atta atte attp 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 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 btec btla btlp bttb caaa caab caac caal caap caat caba cabe cac- caca cacc cace caec cala calc cale call calp calt capa capb capc cape capp capt cat- cata catb catc cate catt cbac cbal cbat cbbc cbca cbcc cbce cbcl cbcp cbct cbea cbec cbee cbet cblb cblc cbpc cbpp cbta cbtc cbtl ccaa ccab ccac ccap ccat ccba ccbc ccca cccb cccc cccl cccp ccee ccel ccla cclc ccpa ccpe ccpl ccpp cctb cctc cctl cctt 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 clab clap clat clea clec clee clep clet clpb clpp cltb cltc cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cplc cppa cptp ctab ctae ctal ctba ctca ctcp ctec ctep ctle ctpp ctta e-cl e-la eaba eaca eacc eaec eala ealc eale eapc eapp eata eate 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 el-b el-p elab elac elal elat elba elbe elca elcb elce elea elec elee elet ella elle elpe elta elte epaa epac epcc epec epee eple epll eppa eppc eppp epta epte etal etap etat etbc etcc etec etee etel etla etta ette laaa laac laal laap laat laba labe laca lacc lace lacl lacp lact lael laet lala lale lall lapa lapb lapc lape lapp lapt lata latc late latt 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 llat llcc llet lllc llll lpac lpec lpla lppl lptb ltac ltae ltap ltbl ltcc ltee ltpa lttc paal paap paat paba pabt paca pace pact 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 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 plcc plce ple- plea pleb plec plee plet 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 tapa tape tapp tapt tata tatb tate tatt tbca tbcb tbcc tbce tbta tbtp tcap tcca tccc tcep tcpa tctc teac teal teat teba teca tecl tect teec teel teet tel- tela telc tele tell telt tepa tepe tepp teta tete tett tlac tlpa tpac tpap tpcp tppa tppp tpte tptp ttab ttbb ttcp tttt