-er -up a-a a-b a-c a-t aaa aab aac aae aap aar aat aau ab- aba abb abc abe abp abr abt abu ac- aca acb acc ace acp acr act acu aea aeb aec aee aep aer aet aeu ap- apa apb apc ape app apr apt apu ar- ara arb arc are arp arr art aru at- ata atb atc ate atp atr att atu au- aua aub auc aue aup aur aut b-p b-u baa bab bac bae bap bar bat bau bba bbb bbc bbe bbp bbr bbt bbu bca bcb bcc bce bcp bcr bct bcu be- bea beb bec bee bep ber bet beu bpa bpb bpc bpe bpp bpr bpt bpu bra brb bre brp brr brt bru bta btb btc bte btp btr btt btu bua bub buc bue bup bur but buu c-- caa cab cac cae cap car cat cau cba cbb cbc cbe cbp cbr cbt cbu cca ccb ccc cce ccp ccr cct ccu ce- cea ceb cec cee cep cer cet ceu cpa cpb cpc cpe cpp cpr cpt cpu cra crb crc cre crp crr crt cru cta ctb ctc cte ctp ctr ctt ctu cua cub cuc cue cup cur cut cuu eaa eab eac eae eap ear eat eau eba ebb ebc ebe ebp ebr ebt ebu ec- eca ecb ecc ece ecr ect ecu eea eeb eec eee eep eer eet ep- epa epb epc epe epp epr ept epu era erb erc ere erp err ert eru eta etb etc ete etp etr ett etu eu- eua eub euc eue eup eur eut p-p paa pab pac pae pap par pat pau pba pbb pbc pbe pbp pbr pbt pbu pca pcb pcc pce pcp pcr pct pcu pea peb pec pee pep per pet peu ppa ppb ppc ppe ppp ppr ppt ppu pra prb prc pre prp prr prt pru pt- pta ptb ptc pte ptp ptr ptt ptu pua pub puc pue pup pur put puu ra- raa rab rac rae rap rar rat rau rba rbb rbc rbe rbp rbr rbt rbu rca rcb rcc rce rcp rcr rct rcu re- rea reb rec ree rep rer ret reu rpa rpb rpc rpe rpp rpr rpt rpu rra rrb rrc rrp rrr rrt rru rta rtb rtc rte rtp rtr rtt rtu rua rub ruc rue rup rur rut ruu taa tab tac tae tap tar tat tau tba tbb tbc tbe tbp tbr tbt tbu tca tcb tcc tce tcp tcr tct tcu te- tea teb tec tee tep ter tet teu tpa tpb tpc tpe tpp tpr tpt tpu tra trb trc tre trp trr trt tru tta ttb ttc tte ttp ttr ttt ttu tua tub tuc tue tup tur tut tuu ua- uaa uab uac uae uap uar uat uau uba ubb ubc ube ubp ubr ubt ubu uca ucb ucc uce ucp ucr uct ucu uea ueb uec uee uep uer uet up- upa upb upc upe upp upr upt upu ur- ura urb urc ure urp urr urt uru uta utb utc ute utp utr utt utu uua uuc uue uur uut uuu

a-be aaaa aaab aaac aaae aaap aaar aaba aabb aabc aabp aabt aaca aacb aacc aace aacp aacr aact aacu aaea aaec aaep aapa aapc aapt aara aarc aare aarp aart aaru aata aatc aatt aaup abaa abab abac abae abap abar abat abau abb- abba abbb abbe abbr abbt abca abcb abcc abcp abcr abct abec abee aber abet abpa abpc abpp abpr abra abrc abta abtu abua abue abut ac-t acaa acab acac acae acap acar acat acba acca accc acce accp acct accu ace- acea acec acer acet acpa acpe acpr acpt acpu acr- acra acrc acre acrr acta actc acte actt actu acu- acue acup acur acut aeac aeap aecb aect aeer aer- aera aerc aeta aetc aetr aett apac apap apar apat apba apbr apca apcb apcc apcr apea apec apep aper apet apeu appa appc appr appt appu apra aprc apre aprt apta aptc apte aptt apua apuc apup arab arac arae arap arar arat arau arba arbe arc- arca arce arct area arec aree arep aret areu arpa arpe arpu arr- arra arrc arre arrr arrt arru arta artc arte artr arua arub arue arup arut at-t ataa atab atac atae atap atar atat atca atcc atcr atea atec atee atep ater atpr atra atrc atre atrp atru atta atte attp attr attu atua atub atuc atur auaa aube auca auce aucp auct auer aupc aur- aura aure aut- aute baaa baar baat baba babb babe babr babu bac- baca bacc bace bact baer bapa bapc bape bapp bapt bapu bar- bara barb barc bare barr bart baru bata batc bate batt batu bau- baur bbau bbbb bbeb bbet bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcec bcer bcet bcpp bcra bcru bctc bcuc bcup beap bear beat beau beba bebb bebe beca becu beeb beep beer beet bera berc bere berr bert beru beta betc bete bett betu beur bpcp bpea bprc brab brac brae brat brau brca brcb brce brea breb brec bree brep brer bret brrr brtc bruc brue brup brut btaa btbp btcc btec btrc btrt bttb buar buat buba bubb bube bubu buca bucc buce bucu buea buer bueu bupa bupc bur- bura burb bure burp burr burt buru but- buta bute butt caaa caab caac caap caat caba cabe cabu cac- caca cacc cace cacr caec caer caeu capa capb capc cape capp capt capu cara carb carc care carp carr cart cat- cata catb catc cate catt catu cauc caup caut cbac cbar cbat cbbc cbca cbcc cbce cbcp cbcr cbct cbcu cbea cbec cbee cber cbet cbpc cbpp cbre cbrt cbta cbtc ccaa ccab ccac ccap ccar ccat ccba ccbc ccca cccb cccc cccp cccu ccee ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccrt cctb cctc cctt ccuc ccup ccut