a-be a-ha aaaa aaab aaae aaah aaar aaav aaba aabb aabh aaea aaev aaha aaoe aaoo aara aare aaro aava abaa abab abae abar abb- abba abbb abbe abbo abbr abee aber abha abho abhr aboa abob aboh aboo abor abov abra abro abva aeer aer- aera aero aeva ahab ahah ahar ahha ahoa ahoe ahor ahra ahre ahrr ahva aoah aoba aora aorb arab arae arah arar arba arbe arbh area aree areh areo arev arh- aroa arob aroe aroo aror arr- arra arre arrh arro arrr arva arve arvo avab avao avar avea aveh aveo aver avor avra avre avro avva avvo baaa baah baar baba babb babe babo babr baer baha baho bahr baoh bar- bara barb bare barh baro barr bava bave bbbb bbeb beah bear beav beba bebb bebe bebo beeb beer behr beo- beor bera bere bero berr bevo bhao bhar bher bhor bhra boab boar boba bobb bobe bobo boea boee boeo boer boha boho bohr boob booe booh boor bor- bora bore borh boro borr bova bove bovo brab brae brah brao brav brea breb bree breo brer brev broa brob broe broh broo bror brrr eaba eabh eara earb eare earh earo eave ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eera eero eeva ehaa ehav ehea eheh eher ehre eora eore erba erbb erbe ereb erer erev erob eroe eroo erra erre erro erve evae evah evar evea ever evoe evoo evra evre haab haar haba habe habo haha haho haor hara hare harh haro harr harv hava have hbar heah hear hebb hebe hebo hebr heeb heer hehe heho heor hera herb here hero herr heve hhaa hhhh hoar hoba hobe hobo hoer hoha hohe hoho hooe hoor hora hore horo horr hova hove hree hrob hvar o-eo oaer oahe oara oare obba obbo obea ober oboe obor obra obre obrh obro oera oere ohba ohbe ohee oher ohho ohob ohoh ohra ohre ooaa ooba oobe ooer ooha ooho oooh oooo oora oore orab orae orah orao orar orav orba orbb orbe orbo ore- orea oreb oreh oreo orer orhe oro- oroe oror orra orro orve orvr ovar ovee over ovo- ovoo ovra ovre raab raba rabb rabe rabo raer raha rahe rahr raob raoh rara rarb rare raro rava rave rbbb rbbr rboh rea- reae reao rear reba rebb rebe rebo reeb reev reha rehb rehe rera rere rero reva reve revo rhae rhea rheb rhee rheo rhoa rhob rhoh roab roar rob- roba robb robe robo roea roer roev roha rohe rohr roob roor rora rore roro rova rove rovo rrah rrrr rver rvvh vaar vahe vaho vara vare varr vava vear veba veer veho veoh veor ver- vera verb vere vero veve vevo vhhh voar voer voho voor vor- vora vore voro vrav vrba vreo vrhe vver vvob vvvv