-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