a-be aaaa aaab aaac aaad aaae aaap aaba aabb aabc aabd aabp aabt aaca aacb aacc aacd aace aacp aact aacu aada aadc aade aadt aadu aaea aaec aaep aapa aapc aapt aata aatc aatt aaup abaa abab abac abad abae abap abat abau abb- abba abbb abbe abbt abca abcb abcc abcd abcp abct abda abdu abec abed abee abet abpa abpc abpd abpp abta abtu abua abud abue abut ac-t acaa acab acac acad acae acap acat acba acca accc accd acce accp acct accu acda acdb acdc acde acdp acdt ace- acea acec aced acet acpa acpd acpe acpt acpu acta actc acte actt actu acu- acue acup acut adaa adab adac adad adae adap adat adba adbc adcc adda addc addd adde addu adea adeb adee adet adp- adta adua adub adue aeac aeap aecb aect aede aedt aeta aetc aett apac apap apat apba apca apcb apcc apcd apda apdd apdu apea apec aped apep apet apeu appa appc appd appt appu apta aptc apte aptt apua apuc apud apup at-t ataa atab atac atad atae atap atat atca atcc atdt atea atec ated atee atep atta atte attp attu atua atub atuc auaa aube auca auce aucp auct audc aude aupc aut- aute baaa baad baat baba babb babe babu bac- baca bacc bace bact bada badb badd bade badu baed bapa bapc bape bapp bapt bapu bata batc bate batt batu bau- baud bbad bbau bbbb bbdd bbeb bbet bcaa bcap bcat bcbc bcbp bcca bccc bcda bcde bcec bcet bcpp bctc bcuc bcup bdbc bddc bdpc bead beap beat beau beba bebb bebe beca becu beda bede bedu beeb beed beep beet beta betc bete bett betu bpcp bpda bpea btaa btbp btcc btdt btec bttb buad buat buba bubb bube bubu buca bucc buce bucu buda budb budd bude budu buea bueu bupa bupc but- buta bute butt c-cd caaa caab caac caap caat caba cabe cabu cac- caca cacc cace cada cadc cadd cade cadu caec caeu capa capb capc capd cape capp capt capu cat- cata catb catc catd cate catt catu cauc caup caut cbac cbat cbbc cbca cbcc cbce cbcp cbct cbcu cbdb cbdc cbea cbec cbee cbet cbpc cbpp cbta cbtc ccaa ccab ccac ccad ccap ccat ccba ccbc ccca cccb cccc cccp cccu ccdc ccdp cced ccee ccpa ccpe ccpp cctb cctc cctt ccuc ccup ccut cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceat ceba cebp cebu cec- ceca cece cecp cect ceda cedd cede cedt cedu ceeb ceec cepa cepc cepe cepp cept cet- ceta cete cetp cpaa cpac cpad cpap cpbc cpca cpce cpcu cpea cpeb cpep cppa cppd cptp ctab ctae ctba ctca ctcp ctec ctep ctpp ctta cuau cub- cuba cubb cube cuca cucc cuce cuda cude cued cupe cupp cut- cuta cutc cute cutt daab daad daae daap daau daba dabb dabp dabt dabu daca dace dact dada dade dadu daeb daeu dapa dape dapp dapu data date datp datt datu daub daud daue daut dbcc dbcp dbpc dbpd dbtt dcbc dcca dccb dccc dccp dcct dccu dcdb dctc dcup dddd ddub deac dead deae deap deau deba debe debt debu dec- deca decc decd dece dect deda dedd dede dedu deeb deed deep deet depa depc depe depp dept deta dete deua deue deut dpaa dpac dpbc dpcp dpdt dppa dppc dtaa dtac dtap dtcc dtdp dted dttp duaa duab duad duat dub- duba dubb dubc dube dubu duca duce duct duda dudd dude dudu duet dupa dupe duta dute dutp duut eaba eaca eacc eada eadb eadd eadp eaec eapc eapp eata eate ebac ebba ebbc ebcc ebed ecaa ecac ecad ecat ecbc ecbe ecca eccb eccc ecce ecct ecdc eced ecpa ecpd ecpp ect- ecta ectc ecua edac edad edca edda eddc edde eddp ede- edea edta educ edup eeca eede eedu eeea eeee eeta eetc eete eetu epaa epac epad epcc epec epee eppa eppc eppp epta epte epub etap etat etbc etcc etec etee etta ette ettu etua euba eubc eucd eude paap paat paba pabt pabu paca pacd pace pact pacu pada padd pade padu paea paec paep papa papb pape papp pata patd pate patt patu paua paud paup paut pbac pbcc pbed pbpa pcaa pcad pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcpb pcpp pcte pdac pdca pdcp pdea pdpa pdtc peab peac peap peat peau peba peca pece pect ped- peda pede peec peed peep peet pepa pepd pepe peta pete pett peut ppac ppad ppap ppcc ppcd pppa pppd pppp ppta pptt ptab ptca ptcc ptdc ptpd pttc pu-e pube pubu puca puce pudu pued puet pueu pupa pupe pupu put- puta pute putt putu puuc taa- taat taba tabb tabc tabe tabu taca tacc tace tact tada tade taec tapa tape tapp tapt tapu tata tatb tate tatt tatu taua taub tauc taue taut tbca tbcb tbcc tbcd tbce tbta tbtp tcad tcap tcca tccc tccu tcdd tcep tcpa tctc tdac tdap tddb teac tead teat teba tebu teca tect teda tedd tede teec teed teet tepa tepe tepp tepu teta tete tett tetu teut tpac tpap tpau tpcd tpcp tpdu tped tppa tppd tppp tpte tptp tput ttab ttbb ttcp tttt tuae tuat tuba tubb tube tubu tuca tucc tude tudu tuet tupa tupe tupu tuta tute tutt tutu uabc uaca uata uatu uaua ubac ubba ubbe ubet ubpc ubud ucad ucat ucbc ucca uccp ucdc ucdd ucea ucpa ucpb ucua ucut udaa udad udau udbc udca udea udet udpd ueba ueda upac upat upbe upca upda uped uppa uppc uppe uppp uppu upup utac utau utec utep utpa utpd uttu uucp uuta uuuu