-vac a-ha aaaa aaab aaac aaah aaar aaav aaba aabb aabc aabh aaca aacb aacc aach aaco aacr aacv aaha aaoo aara aarc aaro aava abaa abab abac abar abb- abba abbb abbo abbr abca abcb abcc abch abcr abha abho abhr aboa abob aboh aboo abor abov abra abrc abro abva acaa acab acac acar acba acca accc acch acco acha achh acho achr acoa acoh acor acr- acra acrc acro acrr acrv acvv ahab ahac ahah ahar ahha ahoa ahor ahra ahrc ahrr ahva aoah aoba aoca aora aorb arab arac arah arar arba arbh arc- arca arch arco arh- aroa arob aroo aror arr- arra arrc arrh arro arrr arva arvo avab avao avar avcc avco avor avra avro avva avvo baaa baah baar baba babb babo babr bac- baca bacc bach baco baha baho bahr baoh bar- bara barb barc barh baro barr bava bbbb bbch bbrc bcaa bcar bcbc bcca bccc bcor bcra bcvo bhao bhar bhca bhcc bhor bhra boab boac boar boba bobb bobo boca boch boco boha boho bohr boob booc booh boor bor- bora borh boro borr bova bovo brab brac brah brao brav brca brcb broa brob broc broh broo bror brrr c-bo caaa caab caac caah caba cabo cac- caca cacc cach caco cacr caha caor cara carb carc caro carr cava cavo cbac cbar cbbc cbca cbcc cbcr cbha cbrh cbva cbvb cbvr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccv ccha cchr ccob ccoc ccra ccrc ccvo chaa chab chac chah chao char chav chca chch chha choc choh choo chor chov chra chrb chrc chro chrr chvo coba cobb cobh cobo coca coch coco coha coho coob cooh cor- cora corb corc coro corr cova covo crab crac crar crbc crca crcc crcr crob croc croh croo cror cvac cvar cvca cvcc cvra cvrr haab haar haba habo haco haha haho haor hara harc harh haro harr harv hava hbar hboc hcbc hcca hccb hccc hcch hhaa hhhh hoac hoar hoba hobo hoca hoch hocr hoha hoho hoor hora horc horo horr hova hrac hrob hrrc hvac hvar hvcc oara obba obbo obor obra obrh obro ocab ocac ocbc occa occc ocha ocra ocro ocrr ohba ohcc ohho ohob ohoh ohra ooaa ooba oocr ooha ooho oooh oooo oora orab orac orah orao orar orav orba orbb orbo orca orch orco oro- oror orra orro orvr ovar ovo- ovoo ovra raab raba rabb rabo rac- raca racc rach raco racv raha rahr raob raoc raoh rara rarb raro rava rbbb rbbr rboh rcac rcbc rcbo rccb rccc rchb rcvr rhoa rhob rhoc rhoh roab roar rob- roba robb robo roca rocc roch roco roha rohr roob roor rora rorc roro rova rovo rrah rrrr rv-c rvca rvvh vaar vaca vach vaco vaho vara varr vava vbcc vhhh voar voca voho vooc voor vor- vora voro vrac vrav vrba vroc vvob vvvv