a-be aaaa aaab aaae aaar aaba aabb aaea aaoe aaoo aara aare aaro abaa abab abae abaj abar abb- abba abbb abbe abbo abbr abee aber aboa abob aboo abor abra abro aeer aer- aera aero ajab ajao ajar ajba ajee ajob ajoo aoba aora aorb arab arae arar arba arbe area aree areo arja arje arjo aroa arob aroe aroo aror arr- arra arre arro arrr baaa baar baba babb babe babo babr baer baja bar- bara barb bare baro barr bbbb bbeb bear beba bebb bebe bebo beeb beej beer beja beo- beor bera bere bero berr bjoa boab boar boba bobb bobe bobo boea boee boeo boer bojo boob booe boor bor- bora bore borj boro borr brab brae braj brao brea breb bree breo brer brje broa brob broe broo bror brrr eaba eara earb eare earo ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eera eero ejer ejob ejoo eora eore erba erbb erbe ereb erer erja erob eroe eroo erra erre erro j-ro jaar jaba jabo jabr jaer jaja jara jare jaro jarr jbaa jbar jbob jear jebb jebe jeer jera jere jero jjar joab joao joar joba jobe jobo joea joee jojo joor jora jore joro 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 orba orbb orbe orbo ore- orea oreb oreo orer oro- oroe oror orra orro raab raaj raba rabb rabe rabo raer raja raje rajo raob rara rarb rare raro rbbb rbbr rea- reae reao rear reba rebb rebe rebo reeb reja rera rere rero roab roar rob- roba robb robe robo roea roer roja roje rojo roob roor rora rore roro rrrr