a-a a-b a-c aaa aab aac aao aar aau aax ab- aba abb abc abo abr abu abx ac- aca acb acc aco acr acu acx aoa aob aoc aoo aor aou aox ar- ara arb arc aro arr aru arx au- aua aub auc auo aur aux ax- axa axo axr axx b-u baa bab bac bao bar bau bax bba bbb bbc bbo bbr bbu bbx bca bcb bcc bco bcr bcu bcx boa bob boc boo bor bou box bra brb bro brr bru brx bua bub buc buo bur buu bux bxb bxo bxx c-- caa cab cac cao car cau cax cba cbb cbc cbo cbr cbu cbx cca ccb ccc cco ccr ccu ccx co- coa cob coc coo cor cou cox cra crb crc cro crr cru crx cua cub cuc cuo cur cuu cxc cxo cxr cxx oaa oab oac oao oar oau oax ob- oba obb obc obo obr obu obx oc- oca ocb occ oco ocr ocu ocx oo- ooa oob ooc ooo oor oox or- ora orb orc oro orr oru orx ou- oua ouc ouo our ox- oxa oxb oxc oxo oxx ra- raa rab rac rao rar rau rax rba rbb rbc rbo rbr rbu rbx rca rcb rcc rco rcr rcu rcx roa rob roc roo ror rou rox rra rrb rrc rrr rru rua rub ruc ruo rur ruu rux rxr ua- uaa uab uac uao uar uau uba ubb ubc ubo ubr ubu ubx uca ucb ucc uco ucr ucu uoa uob uoc uoo uor uox ur- ura urb urc uro urr uru urx uua uuc uur uuu uxb uxc uxo uxr uxu xaa xac xar xau xbc xbr xbx xcb xcr xcx xoa xoc xoo xor xox xrc xrx xxo xxx

aaaa aaab aaac aaar aaba aabb aabc aaca aacb aacc aaco aacr aacu aaoo aara aarc aaro aaru abaa abab abac abar abau abax abb- abba abbb abbo abbr abca abcb abcc abcr aboa abob aboo abor abou abox 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 arax arba arc- arca arco aroa arob aroo aror arr- arra arrc arro arrr arru arua arub auaa auca aur- aura auro auxa axar axo- axoa axxo ba-x baaa baar baba babb babo babr babu bac- baca bacc baco bar- bara barb barc baro barr baru barx bau- baur baux bbau bbbb bbox bbrc bcaa bcar bcbc bcca bccc bcor bcra bcru bcuc boab boac boar boba bobb bobo bobu boca boco bocu boob booc boor boox bor- bora boro borr boru boua bour boxa brab brac brao brau brax brca brcb broa brob broc broo bror brou brox brrr bruc brux buar buba bubb bubo bubu buca bucc buco bucu bur- bura burb buro burr buru buxa c-bo caaa caab caac caba cabo cabu cac- caca cacc caco cacr caor cara carb carc caro carr carx cauc cauo caux caxa cbac cbar cbax cbbc cbca cbcc cbcr cbcu cbox cbux cbxa ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccob ccoc ccra ccrc ccuc coax coba cobb cobo cobu coca coco cocu coob cor- cora corb corc coro corr coua coub cour coux coxa crab crac crar crau crax crbc crbu crca crcc crcr crob croc croo cror crub crux cuau cub- cuba cubb cuca cucc cura curb curo curr cxro cxxx oaau oara obba obbo obor obox 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- oxa- oxo- oxox oxxo raab raba rabb rabo rabu rac- raca racc raco racu raob raoc rara rarb raro raua raub rauc raxa rbbb rbbr rcac rcbc rcbo rccb rccc roab roar rob- roba robb robo robu roca rocc roco roob roor roox rora rorc roro roru roua roub roux roxa roxo 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 urox urra urur uuoc uuuu uxor xaar xara xbar xbox xbra xobc xoca xoco xoro xoxo xura xuxa xuxu xxxo xxxx

-aaa- a-box 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 araux araxa arbab arbar arbor arcoa arcor aroab aroar aroba aroor arora arrau arrou arrua aruaa aruac aruba arura aruru auaxa aurar auro- auroa auror aurox aurra auxo- axura babar babau babax baboo babou babra babur bacab bacao bacar bacax bacca bacco bacu baoro bar-x 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 borax borba borbo borca boro- boroa boroo borou borox borra borro bouar bouba bouca boura braca bracc braco braux brobo broca brora broxa brrar brrrr bruxa bubba bucca bucco bucur buoux buraa burao burca burcu buroo burra burro burru buruc buxar 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 corax corba corbo corbu corca coro- corra couac couba couco coura courb couru craba crabb craco croco cruor crura cuaba cuaro cubao cubo- cubox cubra cubub cuoco curac curar curau curro curua o-r-b oarac oaror obaba obara obora oboro obrab ocara ocaro occar occra