-er a-a a-b a-c aaa aab aac aae aar aau ab- aba abb abc abe abr abu ac- aca acb acc ace acr acu aea aeb aec aee aer aeu ar- ara arb arc are arr aru au- aua aub auc aue aur b-u baa bab bac bae bar bau bba bbb bbc bbe bbr bbu bca bcb bcc bce bcr bcu be- bea beb bec bee ber beu bra brb bre brr bru bua bub buc bue bur buu c-- caa cab cac cae car cau cba cbb cbc cbe cbr cbu cca ccb ccc cce ccr ccu ce- cea ceb cec cee cer ceu cra crb crc cre crr cru cua cub cuc cue cur cuu eaa eab eac eae ear eau eba ebb ebc ebe ebr ebu ec- eca ecb ecc ece ecr ecu eea eeb eec eee eer era erb erc ere err eru eu- eua eub euc eue eur ra- raa rab rac rae rar rau rba rbb rbc rbe rbr rbu rca rcb rcc rce rcr rcu re- rea reb rec ree rer reu rra rrb rrc rrr rru rua rub ruc rue rur ruu ua- uaa uab uac uae uar uau uba ubb ubc ube ubr ubu uca ucb ucc uce ucr ucu uea ueb uec uee uer ur- ura urb urc ure urr uru uua uuc uue uur uuu

a-be aaaa aaab aaac aaae aaar aaba aabb aabc aaca aacb aacc aace aacr aacu aaea aaec aara aarc aare aaru abaa abab abac abae abar abau abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abra abrc abua abue acaa acab acac acae acar acba acca accc acce accu ace- acea acec acer acr- acra acrc acre acrr acu- acue acur aeac aecb aeer aer- aera aerc arab arac arae arar arau arba arbe arc- arca arce area arec aree areu arr- arra arrc arre arrr arru arua arub arue auaa aube auca auce auer aur- aura aure baaa baar baba babb babe babr babu bac- baca bacc bace baer bar- bara barb barc bare barr baru bau- baur bbau bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra bcru bcuc bear beau beba bebb bebe beca becu beeb beer bera berc bere berr beru beur brab brac brae brau brca brcb brce brea breb brec bree brer brrr bruc brue buar buba bubb bube bubu buca bucc buce bucu buea buer bueu bur- bura burb bure burr buru caaa caab caac caba cabe cabu cac- caca cacc cace cacr caec caer caeu cara carb carc care carr cauc cbac cbar cbbc cbca cbcc cbce cbcr cbcu cbea cbec cbee cber cbre ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccee ccra ccrc ccre ccuc ceac cear ceba cebu cec- ceca cece ceeb ceec cer- cera cerc cere crab crac crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creu crub crue cuau cub- cuba cubb cube cuca cucc cuce cuer cura curb cure curr eaba eaca eacc eaec eara earb eare ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecra ecrc ecrr ecru ecua eeca eeea eeee eera eerc erau erba erbb erbe erca ercc erce ereb erec erer erra errc erre erua erub eruc erur euba eubc euer eur- eura eurc eure raab raba rabb rabe rabu rac- raca racc race racu raec raer rara rarb rare raua raub rauc raue rbbb rbbr rcac rcbc rccb rccc rea- reac reae rear reau reba rebb rebe rebu reca recc rece recr recu reeb rera rere reru reue reuu rrrr ruba rubb rube rubu ruca ruce ruer rura rurc rure ruru uabc uaca uarc uaru uaua ubac ubar ubba ubbe uber ubra ucar ucbc ucca ucea ucrc ucua ueba urac urau urba urbe urca ure- urea urra urre urur uuuu

-aaa- aaace aaaee aaarc aabaa aabba aabra aacbc aarau abaab ababa ababe ababu abaca abaer abara abare abaru abbac abbar abbur abccc abear abeau abeba abebe abece abeer abera abere aberr abrac abrar abreu abura aburr acaca acacb acar- acara acare acaua accra accub accue accur aceae acera acerb acrab acrea acree acrue acuba acura acure aeaea aebbe aerru ar-ab ara-c arab- araba arabe araca arace araea arara arare araru arbab arbar arbee arber arbre arcae arcee areae arear areca arere arrau arrea arrua aruaa aruac aruba arura aruru auber aurae aurar aurea aurra baabe babar babau babec babee baber babra babur bacab bacar bacca bacea bacu baraa barab barac barar barba barbe barbu barca barce barea barer barra barre barru barua baruc bauer baura baure bauru bbbee bbear be-er beara beare bebar beber bebra becca becue beeac beebe berar berau berba berbe berca bercu berea berec berra berre berru beuca beuer beure braca bracc brace breba brebu brece breer brera brere breu- brrar brrrr bruce bruer bubba bubbe buber bucca bucur buraa burca burcu burea burra burru buruc c-a-c ca-ca caaba caare caber cabra cabre cacau cacu caec- caeca caere caraa carab carac carau carb- carea carer carra carre carue cauac cauca cauce caue cauer caure ccccc ceace ceara ceare cearr cebec ceber ceeac ceere cerae cerbu cerc- cerca cerce cerea cerec cerer cerre craba crabb crace craer crare crear crebe crece creer creu- creue cruce crura crure cuaba cubbe cubeb cuber cubra cubub cucea cueca cuera curac curae curar curau curce curer curre curua earar ebara ebber ebure ecara ecare eecca eeeee erace erbaa erbar erbbe erber ercea ereac erear erere eruca eubac eucre eurre ra-ra raaba raabe rabab rabac rabba rabbe race- racer rarae rareb raree rarer rccar reace rear- reaue rebab rebar rebbe rebec reber rebra recca recce recea recue recur reece reere rere- reree reuar reuer rubab rubba rubee ruber rubra rucer rueca ruere rurec u-cee uacrr uber- uraba urare urbar urea- ureae urera urrea urubu uruce urucu uuuuu

aaaaba abacab abaera abarca abbace abburu abeere aberra abrera abucea accara accrue acerae acerba acerra acraea acucar acuera