a-be aaaa aaab aaac aaae aaal aaap aaba aabb aabc aabl aabp aaca aacb aacc aace aacl aaco aacp aaea aaec aaep aala aalc aale aall aalo aaoe aaoo aapa aapc aapl aapo abaa abab abac abae abal abap abb- abba abbb abbe abbo abca abcb abcc abcl abcp abec abee abel abla able ablo aboa abob abol aboo abpa abpc abpp acaa acab acac acae acap acba acbl acca accc acce acco accp ace- acea acec acel acla aclc acle acoa acoe acol acop acpa acpe aeac aeap aecb aecl aela aelc aelp al-p alaa alac alae alal alao alap alb- alba albc albe albo alca alcc alce alco alea alec alee aleo alep all- alla alle alll allo aloa aloc aloe alol aloo alop alpa alpe alpl alpo aoba aoca aoce aola aole aopo apac apal apao apap apba apca apcb apcc apco apea apec apel apep apl- apla aple aplp apo- apoc apoe apoo apop appa appc appl baaa baal baba babb babe babo bac- baca bacc bace baco bael bala balc bale ball balo baol bapa bapc bape bapp bbbb bbeb bblb bcaa bcap bcbc bcbp bcca bccc bccl bcec bcpl bcpp beal beap beba bebb bebe bebo beca beeb beel beep bela bele bell belo belp beo- bepo blaa blab blac blae blea bleb blee bleo blob bloc bloo blop boab boac boal boba bobb bobe bobo boca boce boco boea boec boee boel boeo boep bola bole boll bolo boob booc booe bool boop bopa bope bopp bpcp bpea bpel bpoe c-bo caaa caab caac caal caap caba cabe cabo cac- caca cacc cace caco caec cala calc cale call calo calp caol capa capb capc cape capo capp cbac cbal cbbc cbca cbcc cbce cbcl cbcp cbea cbec cbee cblb cblc cbol cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccl cccp ccee ccel ccla cclc ccob ccoc ccpa ccpe ccpl ccpp ceac ceal ceba cebp cec- ceca cece ceco cecp ceeb ceec ceel cel- cela celc cele cell celo ceol ceop cepa cepc cepe cepo cepp clab clap clea clec clee cleo clep clob cloe cloo clop clpb clpp coal coba cobb cobe cobo coca coce coco cocp coel coep col- cola colb cole coll colo colp coob cool coop copa cope copo copp cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cplc cppa e-cl e-la eaba eaca eacc eaec eala ealc eale eaop eapc eapp ebac ebal ebba ebbc ebbo ebcc ebel ebla eboe ebol eboo ebpo ecaa ecac ecal ecao ecbc ecbe ecca eccb eccc ecce eccl ecco ecla eco- ecol ecop ecpa ecpp eeca eeea eeee eele eeoc el-b el-p elab elac elal elba elbe elbo elca elcb elce elco elea elec elee eleo ella elle ello elpe eola eole eolo epaa epac epcc epec epee eple epll epoc epol eppa eppc eppo eppp laaa laac laal laap laba labe labo laca lacc lace lacl laco lacp lael lala lale lall lalo lapa lapb lapc lape lapp lbcc lcac lcbc lcca lccc lcce lcpa lcpc lcpl leaa leal leao leap leba lebo leca lece leco leea leel leep lela lele lell lelo leoc lepa lepe lepo lepp llao llcc lllc llll lloa lloc lloo loac loap lob- loba lobb lobe lobo loca locc loce loco loeb lola lole loll lolo loob looc looe lool loop lopa lope lopp lpac lpec lpla lppl o-eo oall obal obba obbo obea obec obel obla oble oboe obol ocab ocac ocal ocap ocbc occa occc oce ocee oclc ocpa ocpp oec- oeca oecc oeec oela oele oepa olac olba olbo olca olcc ole- olea oleo olla olle ollo olpc olpe ooaa ooba oobe oola oolo oooo opal opap opca opec opel opep opla ople opo- oppa oppo paal paap paba paca pace paco paea paec paep pala pale pall palo palp paoc papa papb pape papp pbac pbcc pboc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pccl pcea pcep pcll pclo pcoa pcoe pcpb pcpp peab peac peal peap peba pebl peca pece pecl peco peec peel peep pel- pela pelb pele pell pelo pepa pepe pepo plaa plab plac plap plcc plce ple- plea pleb plec plee pleo plob ploc ploo plop plpa plpp poba pobo poca poce poco poea poel pola pole poll polo pool poop pop- popa popc pope popo popp ppac ppal ppap ppcc pple pplo ppoa pppa pppo pppp