-hou -vac a-ha aaaa aaab aaac aaah aaar aaav aaba aabb aabc aabh aaca aacb aacc aach aaco aacr aacu aacv aaha aaoo aara aarc aaro aaru aava abaa abab abac abar abau abb- abba abbb abbo abbr abca abcb abcc abch abcr abha abho abhr aboa abob aboh aboo abor abou abov abra abrc abro abua abva acaa acab acac acar acba acca accc acch acco accu acha achh acho achr achu acoa acoh acor acou acr- acra acrc acro acrr acrv acu- acuo acur acvv ahab ahac ahah ahar ahau ahha ahoa ahor ahra ahrc ahrr ahua ahva 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 arva arvo auaa auca auch aur- aura auro avab avao avar avcc avco avor avou avra avro avur avva avvo 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 bava bavu bbau bbbb bbch bbrc bcaa bcar bcbc bcca bccc bcor bcra bcru bcuc bcvo 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 bova bovo brab brac brah brao brau brav brca brcb broa brob broc broh broo bror brou brrr bruc bruh bruv 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 cava cavo cavu cbac cbar cbbc cbca cbcc cbcr cbcu cbha cbrh cbva cbvb cbvr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu cccv ccha cchr ccob ccoc ccra ccrc ccuc ccvo chaa chab chac chah chao char chau chav chca chch chha choc choh choo chor chou chov chra chrb chrc chro chrr chua chub chur chvo coba cobb cobh cobo cobu coca coch coco cocu coha coho coob cooh cor- cora corb corc coro corr coua coub cour cova covo 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 cvac cvar cvca cvcc cvra cvrr haab haar haba habo habu haco haha haho haor hara harc harh haro harr haru harv hau- hava hbar hboc hcbc hcca hccb hccc hcch hhaa hhhh hoac hoar hoba hobo hoca hoch hocr hoha hoho hoor hora horc horo horr hour hova hrac hrob hrrc huac huah huba hubb hubo huch hucu huhu huor hura huro hurr huru huub hvac hvar hvcc 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 orav orba orbb orbo orbu orca orch orco oro- oror orra orro orub orvr ouac oucc ouch our- oura ouro ouu- ovar ovo- ovoo ovra raab raba rabb rabo rabu rac- raca racc rach raco racu racv raha rahr rahu raob raoc raoh rara rarb raro raua raub rauc rava rbbb rbbr rboh rcac rcbc rcbo rccb rccc rchb rcuv rcvr 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 rova rovo rrah rrrr ruah ruba rubb rubu ruca ruch ruhh ruhr rura rurc ruro ruru ruvu rv-c rvca rvvh uabc uaca uaoc uarc uaru uaua ubac ubar ubba ubbo uboc ubra ucar ucav ucbc ucca ucha ucho ucrc ucua uhoh uhuh uocc uor- uovo urac urao urau urba urca urch urho uro- uroa uroo urra urrh urur urva uuoc uuuu uv-a uv-b uv-c uvaa uvac uvvu vaar vaca vach vaco vaho vara varr varu vava vbcc vhhh voar voca voho vohu vooc voor vor- vora voro voru vouh vour vrac vrav vrba vroc vuca vuco vurb vvob vvvv