-er -up a-a a-b a-c aaa aab aac aae aap aar aau ab- aba abb abc abe abp abr abu ac- aca acb acc ace acp acr acu aea aeb aec aee aep aer aeu ap- apa apb apc ape app apr apu ar- ara arb arc are arp arr aru au- aua aub auc aue aup aur b-p b-u baa bab bac bae bap bar bau bba bbb bbc bbe bbp bbr bbu bca bcb bcc bce bcp bcr bcu be- bea beb bec bee bep ber beu bpa bpb bpc bpe bpp bpr bpu bra brb bre brp brr bru bua bub buc bue bup bur buu c-- caa cab cac cae cap car cau cba cbb cbc cbe cbp cbr cbu cca ccb ccc cce ccp ccr ccu ce- cea ceb cec cee cep cer ceu cpa cpb cpc cpe cpp cpr cpu cra crb crc cre crp crr cru cua cub cuc cue cup cur cuu eaa eab eac eae eap ear eau eba ebb ebc ebe ebp ebr ebu ec- eca ecb ecc ece ecr ecu eea eeb eec eee eep eer ep- epa epb epc epe epp epr epu era erb erc ere erp err eru eu- eua eub euc eue eup eur p-p paa pab pac pae pap par pau pba pbb pbc pbe pbp pbr pbu pca pcb pcc pce pcp pcr pcu pea peb pec pee pep per peu ppa ppb ppc ppe ppp ppr ppu pra prb prc pre prp prr pru pua pub puc pue pup pur puu ra- raa rab rac rae rap rar rau rba rbb rbc rbe rbp rbr rbu rca rcb rcc rce rcp rcr rcu re- rea reb rec ree rep rer reu rpa rpb rpc rpe rpp rpr rpu rra rrb rrc rrp rrr rru rua rub ruc rue rup rur ruu ua- uaa uab uac uae uap uar uau uba ubb ubc ube ubp ubr ubu uca ucb ucc uce ucp ucr ucu uea ueb uec uee uep uer up- upa upb upc upe upp upr upu ur- ura urb urc ure urp urr uru uua uuc uue uur uuu

a-be aaaa aaab aaac aaae aaap aaar aaba aabb aabc aabp aaca aacb aacc aace aacp aacr aacu aaea aaec aaep aapa aapc aara aarc aare aarp aaru aaup abaa abab abac abae abap abar abau abb- abba abbb abbe abbr abca abcb abcc abcp abcr abec abee aber abpa abpc abpp abpr abra abrc abua abue acaa acab acac acae acap acar acba acca accc acce accp accu ace- acea acec acer acpa acpe acpr acpu acr- acra acrc acre acrr acu- acue acup acur aeac aeap aecb aeer aer- aera aerc apac apap apar apba apbr apca apcb apcc apcr apea apec apep aper apeu appa appc appr appu apra aprc apre apua apuc apup arab arac arae arap arar arau arba arbe arc- arca arce area arec aree arep areu arpa arpe arpu arr- arra arrc arre arrr arru arua arub arue arup auaa aube auca auce aucp auer aupc aur- aura aure baaa baar baba babb babe babr babu bac- baca bacc bace baer bapa bapc bape bapp bapu bar- bara barb barc bare barr baru bau- baur bbau bbbb bbeb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcec bcer bcpp bcra bcru bcuc bcup beap bear beau beba bebb bebe beca becu beeb beep beer bera berc bere berr beru beur bpcp bpea bprc brab brac brae brau brca brcb brce brea breb brec bree brep brer brrr bruc brue brup buar buba bubb bube bubu buca bucc buce bucu buea buer bueu bupa bupc bur- bura burb bure burp burr buru caaa caab caac caap caba cabe cabu cac- caca cacc cace cacr caec caer caeu capa capb capc cape capp capu cara carb carc care carp carr cauc caup cbac cbar cbbc cbca cbcc cbce cbcp cbcr cbcu cbea cbec cbee cber cbpc cbpp cbre ccaa ccab ccac ccap ccar ccba ccbc ccca cccb cccc cccp cccu ccee ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccuc ccup ceac cear ceba cebp cebu cec- ceca cece cecp ceeb ceec cepa cepc cepe cepp cepr cer- cera cerc cere cerp cpaa cpac cpap cpbc cpca cpce cpcu cpea cpeb cpep cper cppa cpre crab crac crap crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree crep creu crpc crub crue crup cuau cub- cuba cubb cube cuca cucc cuce cuer cupe cupp cupr cura curb cure curr eaba eaca eacc eaec eapc eapp eara earb eare earp ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecpa ecpp ecra ecrc ecrr ecru ecua eeca eeea eeee eera eerc epaa epac epcc epec epee eper eppa eppc eppp epra eprb eprp epub erap erau erba erbb erbe erca ercc erce ercp ereb erec erer erpa erpe erra errc erre erua erub eruc erur euba eubc euer eur- eura eurc eure paap paar paba pabu paca pace pacu paea paec paep paer papa papb pape papp papr par- para parc pare parp parr paru paua paup paur pbac pbar pbcc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcer pcpb pcpp pcra pcrc pcre peab peac peap pear peau peba peca pece pecr peec peep peer pepa pepe per- pera perc pere perp perr peru peur ppac ppap ppar ppcc pper pppa pppp pprc ppru ppur prae prar prau prbc prca prcc prcp pre- preb prec pree prep preu prue pruu pu-e puar pube pubu puca puce puer pueu pupa pupe pupu pur- pura purb pure purp purr puru puuc raab raba rabb rabe rabu rac- raca racc race racu raec raep raer rapa rapc rape rapp rara rarb rare raua raub rauc raue raup rbbb rbbr rcac rcbc rccb rccc rcep rea- reac reae reap rear reau reba rebb rebe rebu reca recc rece recp recr recu reeb reep repe