a-a a-b a-c aaa aab aac aao aar aau ab- aba abb abc abo abr abu ac- aca acb acc aco acr acu aoa aob aoc aoo aor aou ar- ara arb arc aro arr aru au- aua aub auc auo aur b-u baa bab bac bao bar bau bba bbb bbc bbo bbr bbu bca bcb bcc bco bcr bcu boa bob boc boo bor bou bra brb bro brr bru bua bub buc buo bur buu c-- caa cab cac cao car cau cba cbb cbc cbo cbr cbu cca ccb ccc cco ccr ccu co- coa cob coc coo cor cou cra crb crc cro crr cru cua cub cuc cuo cur cuu oaa oab oac oao oar oau ob- oba obb obc obo obr obu oc- oca ocb occ oco ocr ocu oo- ooa oob ooc ooo oor or- ora orb orc oro orr oru ou- oua ouc ouo our ra- raa rab rac rao rar rau rba rbb rbc rbo rbr rbu rca rcb rcc rco rcr rcu roa rob roc roo ror rou rra rrb rrc rrr rru rua rub ruc ruo rur ruu ua- uaa uab uac uao uar uau uba ubb ubc ubo ubr ubu uca ucb ucc uco ucr ucu uoa uob uoc uoo uor ur- ura urb urc uro urr uru uua uuc uur uuu

aaaa aaab aaac aaar aaba aabb aabc aaca aacb aacc aaco aacr aacu aaoo aara aarc aaro aaru abaa abab abac abar abau abb- abba abbb abbo abbr abca abcb abcc abcr aboa abob aboo abor abou abra abrc abro abua acaa acab acac acar acba acca accc acco accu acoa acor acou acr- acra acrc acro acrr acu- acuo acur aoba aoca aora aorb arab arac arar arau arba arc- arca arco aroa arob aroo aror arr- arra arrc arro arrr arru arua arub auaa auca aur- aura auro baaa baar baba babb babo babr babu bac- baca bacc baco bar- bara barb barc baro barr baru bau- baur bbau bbbb bbrc bcaa bcar bcbc bcca bccc bcor bcra bcru bcuc boab boac boar boba bobb bobo bobu boca boco bocu boob booc boor bor- bora boro borr boru boua bour brab brac brao brau brca brcb broa brob broc broo bror brou brrr bruc buar buba bubb bubo bubu buca bucc buco bucu bur- bura burb buro burr buru c-bo caaa caab caac caba cabo cabu cac- caca cacc caco cacr caor cara carb carc caro carr cauc cauo cbac cbar cbbc cbca cbcc cbcr cbcu ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccob ccoc ccra ccrc ccuc coba cobb cobo cobu coca coco cocu coob cor- cora corb corc coro corr coua coub cour crab crac crar crau crbc crbu crca crcc crcr crob croc croo cror crub cuau cub- cuba cubb cuca cucc cura curb curo curr oaau oara obba obbo obor obra obro ocab ocac ocbc occa occc ocra ocro ocrr ocur ooaa ooba oocr oooo oora orab orac orao orar orba orbb orbo orbu orca orco oro- oror orra orro orub ouac oucc our- oura ouro ouu- raab raba rabb rabo rabu rac- raca racc raco racu raob raoc rara rarb raro raua raub rauc rbbb rbbr rcac rcbc rcbo rccb rccc roab roar rob- roba robb robo robu roca rocc roco roob roor rora rorc roro roru roua roub rrrr ruba rubb rubu ruca rura rurc ruro ruru uabc uaca uaoc uarc uaru uaua ubac ubar ubba ubbo uboc ubra ucar ucbc ucca ucrc ucua uocc uor- urac urao urau urba urca uro- uroa uroo urra urur uuoc uuuu

-aaa- aaaoc aaarc aabaa aabba aabra aacbc aarau abaab ababa ababu abaca abaco abara abaru abbac abbar abbou abbur abccc aboab abobo abora aborc abrac abrar abura aburr acaca acacb acar- acara acaua accra accub accur acou- acoua acouo acrab acro- acrob acuba acura ar-ab ara-c arab- araba arabo araca araco arara araru arbab arbar arbor arcoa arcor aroab aroar aroba aroor arora arrau arrou arrua aruaa aruac aruba arura aruru aurar auro- auroa auror aurra babar babau baboo babou babra babur bacab bacao bacar bacca bacco bacu baoro baraa barab barac barao barar barba barbu barca barco baro- baroa baroo baror barra barro barru barua baruc baubo baura bauru bo-bo boaco boaro bobac bobar boboc bobr bocac bocao bocar bocca bocoa bocor booba booco boora booru borac borau borba borbo borca boro- boroa boroo borou borra borro bouar bouba bouca boura braca bracc braco brobo broca brora brrar brrrr bubba bucca bucco bucur buraa burao burca burcu buroo burra burro burru buruc c-a-c c-cor ca-ca caaba cabob caboc cabra cacao cacau caco- cacoa cacu caoba caraa carab carac carau carb- carbo caroa carob carra carro cauac cauca cauco cauro ccccc co-bo co-co coarb coarc cobar cobra cocao cocc- cocco cocoa cocur cooba corba corbo corbu corca coro- corra couac couba couco coura courb couru craba crabb craco croco cruor crura cuaba cuaro cubao cubo- cubra cubub cuoco curac curar curau curro curua o-r-b oarac oaror obaba obara obora oboro obrab ocara ocaro occar occra occur ocora ocr-a ocr-b ooooo oraba orara orobo oroco oroua orrca oruro ouara ouoro ourba r-co- ra-ra raaba raaor rabab rabac rabba rabor rabou rauco rccar ro-ro robab robar robbo robo- robor robur rocar rocca rocco rocoa rocor rocou rooba rorbu rorra rouba roura rubab rubba rubor rubra uacrr uaroo ubobo uraba urbar uroob urour urrao urubu urucu uuuuu

aaaaba aabroo aacrao aacubo ababou abacab abarca abaroa abburu abobra abucco acaro- acauro accara acouo- acucar aourou arabo- aracar aracu ararao araua arauca arauco araura arbour arbra arcaro aroaco arouca aroura arraba arroba arrour aruaru aubrac aucuba aurora baabaa baabar baarbu baaror babaco babacu babarc babbar baboua babrru babura bacaba bacau baccar bacoor baobab bar-or baraca barara barbar barbra barbro barcar barcau barcoo baroco barrou baruar baucau bauour baurua bbbbbb boabab bobara bobbar bobbau boccob bococa booboo borbor bororo boruca boubou boucau bourou bourra bracca bracco braura brocca brocco brocor brubru bububu