a-a a-b a-c aaa aab aac aah aao aar aau ab- aba abb abc abh abo abr abu ac- aca acb acc ach aco acr acu aha ahb ahc ahh aho ahr ahu aoa aob aoc aoh aoo aor aou ar- ara arb arc arh aro arr aru au- aua aub auc auh auo aur b-u baa bab bac bah bao bar bau bba bbb bbc bbh bbo bbr bbu bca bcb bcc bch bco bcr bcu bha bhb bhc bhh bho bhr bhu boa bob boc boh boo bor bou bra brb brh bro brr bru bua bub buc buh buo bur buu c-- caa cab cac cah cao car cau cba cbb cbc cbh cbo cbr cbu cca ccb ccc cch cco ccr ccu ch- cha chb chc chh cho chr chu co- coa cob coc coh coo cor cou cra crb crc crh cro crr cru cua cub cuc cuh cuo cur cuu haa hab hac hah hao har hau hba hbb hbc hbh hbo hbr hbu hca hcb hcc hch hco hcr hha hhb hhc hhh hho hhr hhu hoa hob hoc hoh hoo hor hou hr- hra hrb hrc hrh hro hrr hru hua hub huc huh huo hur huu oaa oab oac oah oao oar oau ob- oba obb obc obh obo obr obu oc- oca ocb occ och oco ocr ocu oha ohc ohh oho ohr ohu oo- ooa oob ooc ooh ooo oor or- ora orb orc orh oro orr oru ou- oua ouc ouh ouo our ra- raa rab rac rah rao rar rau rba rbb rbc rbh rbo rbr rbu rca rcb rcc rch rco rcr rcu rh- rha rhb rhc rhh rho rhr rhu roa rob roc roh roo ror rou rra rrb rrc rrh rrr rru rua rub ruc ruh ruo rur ruu ua- uaa uab uac uah uao uar uau uba ubb ubc ubh ubo ubr ubu uca ucb ucc uch uco ucr ucu uha uhb uhc uhh uho uhr uhu uoa uob uoc uoo uor ur- ura urb urc uro urr uru uua uuc uur uuu

-hou a-ha aaaa aaab aaac aaah aaar aaba aabb aabc aabh aaca aacb aacc aach aaco aacr aacu aaha aaoo aara aarc aaro aaru abaa abab abac abar abau abb- abba abbb abbo abbr abca abcb abcc abch abcr abha abho abhr aboa abob aboh aboo abor abou abra abrc abro abua acaa acab acac acar acba acca accc acch acco accu acha achh acho achr achu acoa acoh acor acou acr- acra acrc acro acrr acu- acuo acur ahab ahac ahah ahar ahau ahha ahoa ahor ahra ahrc ahrr ahua aoah aoba aoca aora aorb arab arac arah arar arau arba arbh arc- arca arch arco arh- aroa arob aroo aror arr- arra arrc arrh arro arrr arru arua arub auaa auca auch aur- aura auro baaa baah baar baba babb babo babr babu bac- baca bacc bach baco baha baho bahr bahu baoh bar- bara barb barc barh baro barr baru bau- baur bbau bbbb bbch bbrc bcaa bcar bcbc bcca bccc bcor bcra bcru bcuc bhao bhar bhca bhcc bhor bhra bhur bhuu boab boac boar boba bobb bobo bobu boca boch boco bocu boha boho bohr bohu boob booc booh boor bor- bora borh boro borr boru boua bouh bour brab brac brah brao brau brca brcb broa brob broc broh broo bror brou brrr bruc bruh buar buba bubb bubo bubu buca bucc buch buco bucu buha buho buhr bur- bura burb burh buro burr buru c-bo caaa caab caac caah caba cabo cabu cac- caca cacc cach caco cacr caha caor cara carb carc caro carr cauc cauo cbac cbar cbbc cbca cbcc cbcr cbcu cbha cbrh ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccha cchr ccob ccoc ccra ccrc ccuc chaa chab chac chah chao char chau chca chch chha choc choh choo chor chou chra chrb chrc chro chrr chua chub chur coba cobb cobh cobo cobu coca coch coco cocu coha coho coob cooh cor- cora corb corc coro corr coua coub cour crab crac crar crau crbc crbu crca crcc crcr crob croc croh croo cror crub cuau cub- cuba cubb cuca cucc cura curb curo curr haab haar haba habo habu haco haha haho haor hara harc harh haro harr haru hau- hbar hboc hcbc hcca hccb hccc hcch hhaa hhhh hoac hoar hoba hobo hoca hoch hocr hoha hoho hoor hora horc horo horr hour hrac hrob hrrc huac huah huba hubb hubo huch hucu huhu huor hura huro hurr huru huub oaau oahu oara obba obbo obor obra obrh obro obuh ocab ocac ocbc occa occc ocha ocra ocro ocrr ocur ohau ohba ohcc ohho ohob ohoh ohra ooaa ooba oocr ooha ooho oooh oooo oora orab orac orah orao orar orba orbb orbo orbu orca orch orco oro- oror orra orro orub ouac oucc ouch our- oura ouro ouu- raab raba rabb rabo rabu rac- raca racc rach raco racu raha rahr rahu raob raoc raoh rara rarb raro raua raub rauc rbbb rbbr rboh rcac rcbc rcbo rccb rccc rchb rhau rhoa rhob rhoc rhoh roab roar rob- roba robb robo robu roca rocc roch roco roha rohr rohu roob roor rora rorc roro roru roua roub rouh rrah rrrr ruah ruba rubb rubu ruca ruch ruhh ruhr rura rurc ruro ruru uabc uaca uaoc uarc uaru uaua ubac ubar ubba ubbo uboc ubra ucar ucbc ucca ucha ucho ucrc ucua uhoh uhuh uocc uor- urac urao urau urba urca urch urho uro- uroa uroo urra urrh urur uuoc uuuu

-aaa- aaaah aaaoc aaarc aabaa aabba aabra aacbc aahaa aarah aarau aarch aaroh abaab ababa ababu abaca abaco abara abaru abbac abbar abbou abbur abccc abcho abhar abhor aboab abobo aboha abora aborc abrac abrar abura aburr acaca acacb acar- acara acaua accho accra accub accur achab achao achar achau achoo achor achro achua acou- acoua acouo acrab acro- acrob acuba acura