a-a a-b a-c aaa aab aac aam aao aar aau aav ab- aba abb abc abm abo abr abu abv ac- aca acb acc acm aco acr acu acv ama amb amc amm amo amr amu amv aoa aob aoc aom aoo aor aou aov ar- ara arb arc arm aro arr aru arv au- aua aub auc aum auo aur auv av- ava avb avc avm avo avr avu b-u baa bab bac bam bao bar bau bav bba bbb bbc bbm bbo bbr bbu bca bcb bcc bcm bco bcr bcu bcv bma bmb bmc bmm bmo bmr bmu bmv boa bob boc bom boo bor bou bov bra brb brm bro brr bru brv bua bub buc bum buo bur buu bva bvb bvc bvm bvo bvr bvu bvv c-- caa cab cac cam cao car cau cav cba cbb cbc cbm cbo cbr cbu cbv cca ccb ccc ccm cco ccr ccu ccv cma cmb cmc cmm cmo cmr cmu cmv co- coa cob coc com coo cor cou cov cra crb crc crm cro crr cru crv cua cub cuc cum cuo cur cuu cuv cva cvb cvc cvm cvo cvr cvu cvv m-o m-r m-v maa mab mac mam mao mar mau mav mba mbb mbc mbm mbo mbr mbu mbv mc- mca mcb mcc mcm mco mcr mcu mcv mma mmb mmc mmm mmo mmr mmu mmv moa mob moc mom moo mor mou mov mra mrb mrc mrm mro mrr mru mrv mua mub muc mum mur muu mva mvb mvc mvm mvo mvr mvv oaa oab oac oam oao oar oau oav ob- oba obb obc obm obo obr obu obv oc- oca ocb occ ocm oco ocr ocu ocv om- oma omb omc omm omo omr omu omv oo- ooa oob ooc oom ooo oor oov or- ora orb orc orm oro orr oru orv ou- oua ouc oum ouo our ov- ova ovb ovc ovo ovv ra- raa rab rac ram rao rar rau rav rba rbb rbc rbm rbo rbr rbu rca rcb rcc rcm rco rcr rcu rcv rma rmb rmc rmm rmo rmr rmv roa rob roc rom roo ror rou rov rra rrb rrc rrm rrr rru rua rub ruc rum ruo rur ruu ruv rva rvb rvc rvm rvo rvr rvu rvv ua- uaa uab uac uam uao uar uau uav uba ubb ubc ubo ubr ubu ubv uca ucb ucc ucm uco ucr ucu ucv um- uma umb umc umm umo umr umu uoa uob uoc uom uoo uor ur- ura urb urc urm uro urr uru uua uuc uum uur uuu uva uvb uvc uvm uvo uvu uvv v-a vaa vab vac vam vao var vau vav vba vbc vbm vbo vbr vbv vca vcc vcm vco vcr vcu vm- vma vmc vmm vmo vmr vmu voa vob voc vom voo vor vou vov vra vrb vrc vrm vrr vru vum vur vuv vva vvb vvc vvm vvo vvr vvv

-vac aaaa aaab aaac aaam aaar aaav aaba aabb aabc aabm aaca aacb aacc aacm aaco aacr aacu aacv aama aamb aamc aamo aamr aaoo aara aarc aarm aaro aaru aava abaa abab abac abam abar abau abb- abba abbb abbo abbr abca abcb abcc abcr abma abmb abmc aboa abob aboo abor abou abov abra abrc abro abua abum abva acaa acab acac acar acba acca accc accm acco accu acma acmc acmu acmv acoa acom acor acou acr- acra acrc acrm acro acrr acrv acu- acum acuo acur acvv amaa amac amam amar amb- amba ambo ambr ambu amca amcc amco amm- amma ammo ammu amob amoc amoo amor amou amra amrc amro amua amum amur aoba aoca aoma aora aorb arab arac aram arar arau arba arc- arca arcm arco arma armc armm armo armu aroa arob arom aroo aror arr- arra arrc arro arrr arru arua arub arum arva arvo auaa auca auma aur- aura auro avab avao avar avcc avco avma avor avou avra avro avur avva avvo baaa baam baar baba babb babm babo babr babu bac- baca bacc baco bama bamb bamc bamm bamu bar- bara barb barc barm baro barr baru bau- baum baur bava bavu bbau bbbb bbcm bbrc bcaa bcam bcar bcbc bcca bccc bccm bcma bcor bcra bcru bcuc bcvo bmaa bmoc bmvc boab boac boar boba bobb bobo bobu boca bocm boco bocu boma bomb bomu boob booc boom boor bor- bora borm boro borr boru boua boum bour bova bovo brab brac bram brao brau brav brca brcb brmc broa brob broc brom broo bror brou brrm brrr bruc brum bruv brvm buar buba bubb bubo bubu buca bucc buco bucu bum- buma bumb bur- bura burb burm buro burr buru c-bo caaa caab caac caam caba cabo cabu cac- caca cacc cacm caco cacr cama camb camc camm camo caor cara carb carc carm caro carr cauc caum cauo cava cavo cavu cbac cbar cbbc cbca cbcc cbcm cbcr cbcu cbrm cbva cbvb cbvr ccaa ccab ccac ccam ccar ccba ccbc ccca cccb cccc cccm cccu cccv ccma ccmb ccmc ccmm ccob ccoc ccom ccra ccrc ccuc ccvo cmaa cmac cmba cmbc cmcc cmcv cmmb cmmc cmoc cmra cmrr coba cobb cobo cobu coca coco cocu com- coma comb comc comm como comr comu coob coom cor- cora corb corc corm coro corr coua coub cour cova covo crab crac cram crar crau crbc crbu crca crcc crcr crmb crmo crob croc crom croo cror crub crum cuau cub- cuba cubb cuca cucc cucm cum- cuma cura curb curo curr cvac cvar cvca cvcc cvra cvrr maaa maac maam maar maba mabo mabu mac- maca macb macc maco macr macu mama mamc mamo mamu maoc maor mar- mara marc marm maro marr maru marv maua maum maur mava mavo mbac mbam mbav mbba mbca mbou mcaa mcac mcba mcbc mcca mccc mccv mcmc mcmv mcrc mmaa mmab mmac mmar mmcc mmcm mmcv mmmc mmmm mmor mmrc moaa moab