a-be a-ii a-iv aaaa aaab aaae aaai aaar aaav aaba aabb aabi aaea aaev aaib aaii aaoe aaoo aara aare aari aaro aava abaa abab abae abai abar abb- abba abbb abbe abbi abbo abbr abee aber abia abib abie abir aboa abob aboo abor abov abra abri abro abva aebi aeer aeio aer- aera aeri aero aeva aiai aiba aibo aiea aiee aiia aiib aiir aioi aira aire airi airo aiva aoba aora aorb arab arae arai arar arba arbe arbi area aree arei areo arev aria arib arie arii ario aroa arob aroe aroi aroo aror arr- arra arre arri arro arrr arva arve arvi arvo avab avao avar avea aveo aver avia avie avio aviv avor avra avre avri avro avva avvo ba-i baaa baar baba babb babe babi babo babr baer baia baib baie baio bair bar- bara barb bare bari baro barr bava bave bavi bbbb bbeb bear beav beba bebb bebe bebi bebo beeb beer beia beir beo- beor bera bere beri bero berr bevo biao biar biba bibb bibe bibi bibo bieb bier bio- bioi bira birb bire biri biro birr bive bivi boab boai boar boba bobb bobe bobi bobo boea boee boeo boer boi- boie boii boob booe boor bor- bora bore bori boro borr bova bove bovi bovo brab brae brai brao brav brea breb bree brei breo brer brev bria brie brio broa brob broe broo bror brrr brvi eaba eara earb eare earo eave ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eera eero eeva eiao eiei eier eira eire eoir eora eore eori erba erbb erbe ereb erei erer erev eria erie erio erob eroe eroi eroo erra erre erro erve ervi evae evar evea ever evia evie evir evoe evoo evra evre i-be iaaa iaai iaba iaea iaia iara iare iava ibar ibea ibia ibie ibra ibri ibro ieie ieio iera iere ieri ieva iiie iiii iiio iioi iioo iira ioba iobi ioee ioii ioio iooi iooo iora iore iori irae irai irao irar irbe iree irer iri- iria irie irio irob irov irra irre irri ivai ivao ivar ivbv ivea iver ivie ivor ivre o-eo oaer oara oare obai obba obbo obea ober obia obie oboe oboi obor obra obre obri obro obvi oera oere oiav oiba oier oiii oira oire ooaa ooba oobe oobi ooer ooia oooo oora oore orab orae orai orao orar orav orba orbb orbe orbi orbo ore- orea oreb oreo orer ori- oria orie orio oro- oroe oror orra orri orro orve orvr ovar ovee over ovi- ovie ovo- ovoo ovra ovre raab raba rabb rabe rabi rabo raer raia raie raii rair raob rara rarb rare rari raro rava rave ravi rbbb rbbr rea- reae reao rear reba rebb rebe rebo reeb reev reia reii reir rera rere reri rero reva reve revi revo riaa riab riai rib- riba ribe ribo rier riia rire riri riva rive rivo roab roar rob- roba robb robe robi robo roea roer roev roia roio roir roob rooi roor rora rore rori roro rova rove rovi rovo rrrr rver vaar vaia vaie vaio vair vara vare vari varr vava vear veba veer veia veie veii veir veor ver- vera verb vere veri vero veve vevi vevo viae viar vibe vier viii vira virb vire viri viro virr viva vive vivi vivo voar voei voer voia voie voio voir voor vor- vora vore vori voro vrai vrav vrba vreo vria vrio vver vvob vvvv