a-be aaaa aaab aaac aaae aaal aaap aaar aaba aabb aabc aabl aabp aaca aacb aacc aace aacl aacp aacr aaea aaec aaep aala aalc aale aall aapa aapc aapl aara aarc aare aarp abaa abab abac abae abal abap abar abb- abba abbb abbe abbr abca abcb abcc abcl abcp abcr abec abee abel aber abla able abpa abpc abpp abpr abra abrc acaa acab acac acae acap acar acba acbl acca accc acce accp ace- acea acec acel acer acla aclc acle aclr acpa acpe acpr acr- acra acrc acre acrr aeac aeap aecb aecl aeer aela aelc aelp aer- aera aerc al-p alaa alac alae alal alap alar alb- alba albc albe alca alcc alce alea alec alee alep aler all- alla alle alll allr alpa alpe alpl apac apal apap apar apba apbr apca apcb apcc apcr apea apec apel apep aper apl- apla aple aplp appa appc appl appr apra aprc apre arab arac arae aral arap arar arba arbe arc- arca arce area arec aree arel arep arla arle arpa arpe arpl arr- arra arrc arre arrr baaa baal baar baba babb babe babr bac- baca bacc bace bael baer bala balc bale ball bapa bapc bape bapp bar- bara barb barc bare barr bbbb bbeb bblb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bccl bcec bcer bcpl bcpp bcra beal beap bear beba bebb bebe beca beeb beel beep beer bela bele bell belp bera berc bere berr blaa blab blac blae blea bleb blee blrc bpcp bpea bpel bprc brab brac brae brca brcb brce brea breb brec bree brel brep brer brlp brrr caaa caab caac caal caap caba cabe cac- caca cacc cace cacr caec caer cala calc cale call calp capa capb capc cape capp cara carb carc care carl carp carr cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcp cbcr cbea cbec cbee cber cblb cblc cbpc cbpp cbre cbrl ccaa ccab ccac ccap ccar ccba ccbc ccca cccb cccc cccl cccp ccee ccel ccla cclc ccpa ccpe ccpl ccpp ccpr ccra ccrc ccre ccrl ccrp ceac ceal cear ceba cebp cec- ceca cece cecp ceeb ceec ceel cel- cela celc cele cell cepa cepc cepe cepp cepr cer- cera cerc cere cerl cerp clab clap clar clea clec clee clep cler clpb clpp clra cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cper cplc cppa cpre crab crac crap crar crbc crca crcc crce crcr cre- crea creb crec cree crep crpc e-cl e-la eaba eaca eacc eaec eala ealc eale eapc eapp eara earb eare earl earp ebac ebal ebba ebbc ebbr ebcc ebel eber ebla ecaa ecac ecal ecar ecbc ecbe ecca eccb eccc ecce eccl ecla ecpa ecpp ecra ecrc ecrl ecrr eeca eeea eeee eele eera eerc el-b el-p elab elac elal elar elba elbe elca elcb elce elea elec elee eler ella elle elpe elra epaa epac epcc epec epee eper eple epll eppa eppc eppp epra eprb eprp eral erap erba erbb erbe erca ercc erce ercp ereb erec erel erer erla erle erll erpa erpe erra errc erre laaa laac laal laap laar laba labe labr laca lacc lace lacl lacp lael laer lala lale lall lapa lapb lapc lape lapp lara larb larc lare larp larr lbar lbcc lblr lcac lcbc lcca lccc lcce lcer lcpa lcpc lcpl lcra lcrl leaa leal leap lear leba leca lece leea leel leep leer lela lele lell lepa lepe lepp lera lerc lere lerp llcc lllc llll lpac lpec lpla lppl lprp lrac lral lrba lrrc lrrr paal paap paar paba paca pace paea paec paep paer pala pale pall palp papa papb pape papp papr par- para parc pare parl parp parr pbac pbar pbcc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pccl pcea pcep pcer pcll pcpb pcpp pcra pcrc pcre pcrl peab peac peal peap pear peba pebl peca pece pecl pecr peec peel peep peer pel- pela pelb pele pell pepa pepe per- pera perc pere perl perp perr plaa plab plac plap plar plbr plcc plce ple- plea pleb plec plee plpa plpp plra ppac ppal ppap ppar ppcc pper pple pppa pppp pprc prae prar prbc prca prcc prcp pre- preb prec pree prel prep prle prlr raab raba rabb rabe rabl rac- raca racc race raec rael raep raer rala ralb rale rall rapa rapc rape rapl rapp rara rarb rare rbbb rbbr rbcl rble rcac rcbc rccb rccc rcep rcle rea- reac reae real reap rear reba rebb rebe reca recc rece recp recr reeb reel reep rela relb rele rell relp repe repl repp repr rera rere rlab rlee rpca rrle rrrr