a-a a-b a-c aaa aab aac aan aar aau ab- aba abb abc abn abr abu ac- aca acb acc acn acr acu an- ana anb anc ann anr anu ar- ara arb arc arn arr aru au- aua aub auc aun aur b-u baa bab bac ban bar bau bba bbb bbc bbn bbr bbu bca bcb bcc bcn bcr bcu bna bnb bnc bnn bnr bnu bra brb brn brr bru bua bub buc bun bur buu c-- caa cab cac can car cau cba cbb cbc cbn cbr cbu cca ccb ccc ccn ccr ccu cn- cna cnb cnc cnn cnr cnu cra crb crc crn crr cru cua cub cuc cun cur cuu naa nab nac nan nar nau nba nbb nbc nbn nbr nbu nca ncb ncc ncn ncr ncu nna nnb nnc nnn nnu nra nrb nrc nrn nrr nru nua nub nuc nun nur nuu ra- raa rab rac ran rar rau rba rbb rbc rbn rbr rbu rca rcb rcc rcn rcr rcu rna rnb rnc rnn rnr rnu rra rrb rrc rrn rrr rru rua rub ruc run rur ruu ua- uaa uab uac uan uar uau uba ubb ubc ubn ubr ubu uca ucb ucc ucn ucr ucu un- una unb unc unn unr unu ur- ura urb urc urn urr uru uua uuc uun uur uuu

-ana a-un aaaa aaab aaac aaan aaar aaba aabb aabc aaca aacb aacc aacn aacr aacu aana aara aarc aaru abaa abab abac aban abar abau abb- abba abbb abbr abca abcb abcc abcn abcr abnu abra abrc abua abun acaa acab acac acan acar acba acca accc accu acr- acra acrc acrr acu- acur ana- anaa anab anac anan anar anau anba anbb anbu anca ancc anna annb anrc anua anub anun arab arac aran arar arau arba arc- arca arna arr- arra arrc arrr arru arua arub arun auaa auca auna aur- aura baaa baan baar baba babb babr babu bac- baca bacc bacn bana banc bann banr banu bar- bara barb barc barn barr baru bau- baur bbau bbbb bbrc bcaa bcar bcbc bcca bccc bcnu bcra bcru bcuc bnrr brab brac bran brau brca brcb brna brrr bruc brun buar buba bubb bubu buca bucc bucu buna bunb bunn bunu bur- bura burb burn burr buru caaa caab caac caan caba cabu cac- caca cacc cacr cana canc cann cara carb carc carn carr cauc cbac cbar cbbc cbca cbcc cbcn cbcr cbcu cbna cbrn ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc cccu ccna ccnb ccnc ccnr ccnu ccra ccrc ccuc cnaa cnac cnbc cnna cnrc cnrr crab crac cran crar crau crbc crbu crca crcc crcr crna crub crun cuan cuau cub- cuba cubb cuca cucc cucn cuna cura curb curn curr naaa naab naac naan naar naba nabc nabu naca nacc nan- nana nanb nann nanu nara narc narn narr naru naur nbaa nbar nbbc nbca nbcc ncaa ncac ncar ncba ncbc ncca nccc nccn nccr nccu ncna ncnc ncra ncrc ncua nnnn nrab nrca nrna nrrc nuan nuba nubc nuca nucu nuna nunc nunn nura nurc nurn nurr nuru raab raan raba rabb rabu rac- raca racc racu rana ranc rann rara rarb raua raub rauc raun rbbb rbbr rcac rcbc rccb rccc rcnr rnbr rrna rrrr rrun ruan ruba rubb rubu ruca runa runc runn rura rurc ruru ruun uabc uaca uarc uaru uaua ubac ubar ubba ubra ucan ucar ucbc ucca ucrc ucua unaa unac unan unar unau unca uncc unna unra urac uran urau urba urca urna urra urun urur uuuu

-aaa- aaarc aabaa aabba aabra aacbc aarau aarna abaab ababa ababu abaca abana abanc abann abara abarn abaru abbac abban abbar abbur abcan abccc abnub abrac abran abrar abrun abuna abura aburn aburr acaca acacb acana acar- acara acaua accra accub accur acrab acuba acura anaba anana anara anaru anaua anaun anban anbar ancar annan annar anncr annua annur anura ar-ab ara-c arab- araba araca arana aranc arara araru arbab arbar arcan arnac arnan arnar arran arrau arrua aruaa aruac aruba aruna arura aruru aubun aucan aucun aunac aunc- aurar aurra baarn baban babar babau babra babur bacab bacar bacca bacu bacun banan banar banau banba banca banna bannu banur baraa barab barac baran barar barba barbu barca barna barra barru barua baruc barun baura bauru braca bracc brana branc brann braun brrar brrrr bruan bruna brunn bruun bubba bucan bucca bucur bunab bunac bunan bunar bunau bunna bunun buraa buran burca burcu burn- burna burra burru buruc burun c-a-c c-ran ca-ca caaan caaba caban cabra cacau cacu canan canar canna canuc canun caraa carab carac carau carb- carna carra cauac cauca caun- cauna ccccc cnnnn craba crabb cran- crana crann crcna crnac crnca crura cuaba cuban cubra cubub cunac cunan curac curan curar curau curua naban nabar nabau nabba nabua nabur nacaa nacac nacar nacba naccc nacna nanan nanbu nann- nanna nanur naran narau narc- narra narun narur naura nauru nu-nu nuabu nubar nubra nucca nunan nunca nunna nunun nurar nurra nurun ra-ra raaba rabab rabac raban rabba rabun racan ranac ranau ranca ranna rannc rannu ranua rauna rccar ruana rubab ruban rubba rubra runan runcu ruran uacrr unara unaru unban unbar unnau unnun unnur unrar unrra unrun unurn uraan uraba uran- urana urban urbar uruan urubu urucu uuuuu

aaaaba aanaar abaana abacab abanar abanca abaran abarca abbana abburu accara acucar acuna an-nur anaana anabaa anabar ananab anaran anbabu anbura ancara annaba anuna anuran araban aracar aracu aranca araua arauan arauca arauna araura arbra arcana arnaba arnara arraba aruana aruaru aruban aubrac auburn aucuba aurana baabaa baabar baarbu babacu babana babarc babbar babrru babura bacaba bacau baccar banaba banana banara banaru banaur banbar bannan bannar bannur baraan baraca barana barara barban barbar barbra barcar barcau barran baruar baruna baucau baurua bbbbbb bracca branca branna brauna braura brubru brunau brunca brunna bububu bucana buccan buccra bunaba bunara bunuba buraan buraca burana burban burbur c-anca cabaan cabana cabar cabara cabarr