a-a a-b a-c aaa aab aac aad aar aau ab- aba abb abc abd abr abu ac- aca acb acc acd acr acu ad- ada adb adc add adr adu ar- ara arb arc ard arr aru au- aua aub auc aud aur b-u baa bab bac bad bar bau bba bbb bbc bbd bbr bbu bca bcb bcc bcd bcr bcu bda bdb bdc bdd bdr bdu bra brb brd brr bru bua bub buc bud bur buu c-- caa cab cac cad car cau cba cbb cbc cbd cbr cbu cca ccb ccc ccd ccr ccu cda cdb cdc cdd cdr cdu cra crb crc crd crr cru cua cub cuc cud cur cuu daa dab dac dad dar dau dba dbb dbc dbd dbr dbu dca dcb dcc dcd dcr dcu dda ddb ddc ddd ddr ddu dra drb drc drd drr dru dua dub duc dud dur ra- raa rab rac rad rar rau rba rbb rbc rbd rbr rbu rca rcb rcc rcd rcr rcu rda rdb rdc rdd rdr rdu rra rrb rrc rrd rrr rru rua rub ruc rud rur ruu ua- uaa uab uac uad uar uau uba ubb ubc ubr ubu uca ucb ucc ucd ucr ucu uda udb udc udd udr udu ur- ura urb urc urd urr uru uua uuc uur uuu

aaaa aaab aaac aaad aaar aaba aabb aabc aabd aaca aacb aacc aacd aacr aacu aada aadc aadu aara aarc aard aaru abaa abab abac abad abar abau abb- abba abbb abbr abca abcb abcc abcd abcr abda abdu abra abrc abua abud acaa acab acac acad acar acba acca accc accd accu acda acdb acdc acr- acra acrc acrr acu- acur adaa adab adac adad adar adba adbc adcc adda addc addd addr addu adra adua adub adur arab arac arad arar arau arba arc- arca arda ardc ardu arr- arra arrc arrr arru arua arub arud auaa auca audc aur- aura aurd baaa baad baar baba babb babr babu bac- baca bacc bada badb badd badr badu bar- bara barb barc bard barr baru bau- baud baur bbad bbau bbbb bbdd bbrc bcaa bcar bcbc bcca bccc bcda bcra bcru bcuc bd-r bdbc bddc brab brac brad brau brca brcb brda brrr bruc brud buad buar buba bubb bubu buca bucc bucu buda budb budd budu bur- bura burb burd burr buru c-cd caaa caab caac caba cabu cac- caca cacc cacr cada cadc cadd cadr cadu cara carb carc card carr cauc cbac cbar cbbc cbca cbcc cbcr cbcu cbdb cbdc cbrd ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccu ccdc ccdr ccra ccrc ccuc cd-r cdaa cdac cdad cdba cdda cddb cddr crab crac crar crau crbc crbu crca crcc crcr crda crdc crub crud cuau cub- cuba cubb cuca cucc cuda cura curb curd curr daab daad daar daau daba dabb dabu daca dada dadu dara darb darc dard darr daru daub daud daur dbar dbcc dcbc dcca dccb dccc dccu dcdb dcra dddd ddrc ddub draa drab drac drad drar drau drba drbc drca drda drra drua drub druu duaa duab duad duar dub- duba dubb dubc dubu duca duda dudd dudu dura duru duur raab raad raba rabb rabu rac- raca racc racu rada radc radd radr radu rara rarb raua raub rauc raud rbbb rbbr rcac rcbc rccb rccc rcdc rcrd rdac rrad rrrr ruad ruba rubb rubu ruca ruda rudd rura rurc rurd ruru ruud uabc uaca uarc uaru uaua ubac ubar ubba ubra ubud ucad ucar ucbc ucca ucdc ucdd ucrc ucua udaa udad udar udau udbc udca udra urac urad urau urba urca urda urdu urra urur uuuu

-aaa- -abad aaadc aaarc aabaa aabba aabra aacbc aadac aarau abaab ababa ababu abaca abada abara abaru abbac abbad abbar abbud abbur abccc abcdb abrac abrad abrar abrud abuda abura aburr acaca acacb acar- acara acard acaua accad accra accrd accub accur acrab acuba acura adaba adada adara addra addur adrad adrar aduba ar-ab ara-c arab- araba araca arada arara araru arbab arbar ardab ardra ardua ardud arrau arrua aruaa aruac aruba arura aruru aubad audad audra audru aurad aurar aurra baard babar babau babra babur bacab bacar bacca bacu badar badra badur baraa barab barac barad barar barba barbu barca barda bardu barra barru barua baruc barud baura bauru braca bracc brada bradu brard braud brdda brrar brrrr brud- buada bubba bucca bucur budac budca budda buddu budur buraa burca burcu burda burra burru buruc burud c-a-c ca-ca caaba cabra cacau cacu cadac cadar caddr cadra caduc caraa carab carac carad carau carb- carda carra cauac cauca caud- cauda ccccc craba crabb crada cradd crura cuaad cuaba cubra cubub curac curad curar curau curda curua d-a-d d-cru d-rad daada daara dabar dabba dabbu dabra dabua dabur dacau dacca dadar dadau dadda dadra dadur daraa darab darba darbu darda darra darur dauda daura dccab ddddd draba draca duara dubac dubar dubau dubba dubra dubuc dudar dudua duduc durab durba durra ra-ra raaba raard rabab rabac rabad rabba rabda rabud radar radau raduc rauda rccar rcuda rubab rubba rubra rudar rudra u-dub uacrr uarda udara uraba urbar urubu urucu uuard uurad uuuuu

aaaaba ababda abacab abarca abburu abdaru accara acucar adarra addada adrara aduadu aduard aracar aracu aradac ararad araua arauca araura arbra arcada ardara arraba arruda aruaru aubrac aucuba baabaa baabar baabda baarbu babacu babarc babbar babrru babura baburd bacaba bacau baccar badara badaud badbad badbar badr-b badrud badura baraca barada barara barbad barbar barbra barcar barcau bardar barrad baruar baucau bauduc baurua bbbbbb bracca braura brubru buabad bububu buccra budacu budara bududa buraca burbur burdur burrda cabar cabara cabarr cabucu cadaba cadca caduac caduca caraca caracu carara carcar carru carura caruru caudad cracca cubard cubura cucurb curaca curara curbar curuba curuca dababa dabaca dabara dabdab dadaab dadada dadara daraar darara darbar dardar darrud dracar dubdub durau durbar durdar raabau rababa rabaud radara radaur radura rubarb rubbra rucar rudaba rudbar rudrur uacaba ucuuba udburu urraca