a-be aaaa aaab aaac aaae aaal aaap aaba aabb aabc aabl aabp aaca aacb aacc aace aacl aacp aaea aaec aaep aala aalc aale aall aapa aapc aapl abaa abab abac abae abal abap abb- abba abbb abbe abca abcb abcc abcl abcp abec abee abel abla able abpa abpc abpp acaa acab acac acae acap acba acbl acca accc acce accp ace- acea acec acel acla aclc acle acpa acpe aeac aeap aecb aecl aela aelc aelp al-p alaa alac alae alal alap alb- alba albc albe alca alcc alce alea alec alee alep all- alla alle alll alpa alpe alpl apac apal apap apba apca apcb apcc apea apec apel apep apl- apla aple aplp appa appc appl baaa baal baba babb babe bac- baca bacc bace bael bala balc bale ball bapa bapc bape bapp bbbb bbeb bblb bcaa bcap bcbc bcbp bcca bccc bccl bcec bcpl bcpp beal beap beba bebb bebe beca beeb beel beep bela bele bell belp blaa blab blac blae blea bleb blee bpcp bpea bpel caaa caab caac caal caap caba cabe cac- caca cacc cace caec cala calc cale call calp capa capb capc cape capp cbac cbal cbbc cbca cbcc cbce cbcl cbcp cbea cbec cbee cblb cblc cbpc cbpp ccaa ccab ccac ccap ccba ccbc ccca cccb cccc cccl cccp ccee ccel ccla cclc ccpa ccpe ccpl ccpp ceac ceal ceba cebp cec- ceca cece cecp ceeb ceec ceel cel- cela celc cele cell cepa cepc cepe cepp clab clap clea clec clee clep clpb clpp cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cplc cppa e-cl e-la eaba eaca eacc eaec eala ealc eale eapc eapp ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecbc ecbe ecca eccb eccc ecce eccl ecla ecpa ecpp eeca eeea eeee eele el-b el-p elab elac elal elba elbe elca elcb elce elea elec elee ella elle elpe epaa epac epcc epec epee eple epll eppa eppc eppp laaa laac laal laap laba labe laca lacc lace lacl lacp lael lala lale lall lapa lapb lapc lape lapp lbcc lcac lcbc lcca lccc lcce lcpa lcpc lcpl leaa leal leap leba leca lece leea leel leep lela lele lell lepa lepe lepp llcc lllc llll lpac lpec lpla lppl paal paap paba paca pace paea paec paep pala pale pall palp papa papb pape papp pbac pbcc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pccl pcea pcep pcll pcpb pcpp peab peac peal peap peba pebl peca pece pecl peec peel peep pel- pela pelb pele pell pepa pepe plaa plab plac plap plcc plce ple- plea pleb plec plee plpa plpp ppac ppal ppap ppcc pple pppa pppp