a-be aaaa aaab aaae aaar aaav aaba aabb aaea aaev aaoe aaoo aara aare aaro aava abaa abab abae abaj abar abb- abba abbb abbe abbo abbr abee aber aboa abob aboo abor abov abra abro abva aeer aer- aera aero aeva ajab ajao ajar ajba ajee ajob ajoo aoba aora aorb arab arae arar arba arbe area aree areo arev arja arje arjo aroa arob aroe aroo aror arr- arra arre arro arrr arva arve arvo avab avaj avao avar avea aveo aver avor avra avre avro avva avvo baaa baar baba babb babe babo babr baer baja bar- bara barb bare baro barr bava bave bbbb bbeb bear beav beba bebb bebe bebo beeb beej beer beja beo- beor bera bere bero berr bevo bjoa boab boar boba bobb bobe bobo boea boee boeo boer bojo boob booe boor bor- bora bore borj boro borr bova bove bovo brab brae braj brao brav brea breb bree breo brer brev brje broa brob broe broo bror brrr eaba eara earb eare earo eave ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eera eero eeva ejer ejob ejoo eora eore erba erbb erbe ereb erer erev erja erob eroe eroo erra erre erro erve evae evar evea ever evje evoe evoo evra evre j-ro jaar jaba jabo jabr jaer jaja jara jare jaro jarr java jave jbaa jbar jbob jear jebb jebe jeer jera jere jero jjar joab joao joar joba jobe jobo joea joee jojo joor jora jore joro jova jove jovo jrbr o-eo oaer oara oare obba obbo obea ober obja oboe obor obra obre obro oera oere ojea ooaa ooba oobe ooer oooo oora oore orab orae orao orar orav orba orbb orbe orbo ore- orea oreb oreo orer oro- oroe oror orra orro orve orvr ovar ovee over ovo- ovoo ovra ovre raab raaj raba rabb rabe rabo raer raja raje rajo raob rara rarb rare raro rava rave rbbb rbbr rea- reae reao rear reba rebb rebe rebo reeb reev reja rera rere rero reva reve revo roab roar rob- roba robb robe robo roea roer roev roja roje rojo roob roor rora rore roro rova rove rovo rrrr rver vaar vaja vara vare varr vava vear veba veer veja veor ver- vera verb vere vero veve vevo vjaa voar voer voor vor- vora vore voro vrav vrba vreo vver vvob vvvv