a-be aaaa aaab aaae aaar aaba aabb aaea aage aaoe aaoo aara aare aaro aaru abaa abab abae abag abar abau abb- abba abbb abbe abbo abbr abee aber aboa abob aboo abor abou abra abro abua abue abug aeer aega aer- aera aero ag-o agag agao agar agau agba agbo agea agee ager agga agge aggu agob agog agoo agou agra agre agro agua ague agur aoba aoeu aora aorb arab arae arag arar arau arba arbe area aree areg areo areu arga argb arge argo aroa arob aroe aroo aror arr- arra arre arrg arro arrr arru arua arub arue arug auaa aube auer auga auge aur- aura aure auro auug baaa baar baba babb babe babo babr babu baer baga bage bagg bago bar- bara barb bare barg baro barr baru bau- baug baur bbau bbbb bbeb bbga bbrg beag bear beau beba bebb bebe bebo beeb beeg beer bega begg bego begu beo- beor bera bere berg bero berr beru beur boab boag boar boba bobb bobe bobo bobu boea boee boeo boer boga boge bogg bogo boob booe boog boor bor- bora bore borg boro borr boru boua boue bour brab brae brag brao brau brea breb bree breg breo brer broa brob broe brog broo bror brou brrr brue brug buar buba bubb bube bubo bubu buea buer bueu buga buge bugg bugo bur- bura burb bure burg buro burr buru eaba eaga eage eara earb eare earo ebba ebbo ebbr eber eboe eboo ebor ebro ebru ebur eeea eeee eega eera eerg eero egaa egae egao egar egba egbe egbu egea egee eger eggb egge eggo ego- egor egra egre eora eore erau erba erbb erbe ereb erer erg- erga ergg ergo erob eroe eroo erra erre erro erua erub erur euba euer euge eur- eura eure euro gaar gaba gabb gabe gabo gabr gabu gaea gaer gaga gage gagg gago gagu gara garb gare garg garo garr gaua gaub gaue gaur gbag gbbo geab gear geba gebe geer gege gegg gego geo- geog gera gerb gere gero geru geue gggg goar goba gobe gobo goer goga gogo goog goor gora gorb gore gorg goro gorr gou- goug gour grab grae grau grbr grea greb gree greg greu grob grog groo gror grou grrr grua grub grue grug grur guaa guag guao guar guba gubb gubu guer guga gugb guge gugg gugu gura gurb gure gurg guro gurr guru o-eo oaau oaer oara oare obba obbo obea ober oboe obor obra obre obro oegb oera oere ogae ogar ogb ogba ogbe ogea ogee oger ogge ogoa ogog ogou ogra ogre ogro ooaa ooba oobe ooer oooo oora oore orab orae orao orar orba orbb orbe orbo orbu ore- orea oreb oreg oreo orer orga orge orgo oro- oroe oror orra orro orub ouea ouer ouge our- oura oure ouro ouu- raab raag raba rabb rabe rabo rabu raeg raer raga rage ragg rago ragu raob rara rarb rare raro raua raub raue rbbb rbbr rea- reae reao rear reau reba rebb rebe rebo rebu reeb rega rege rego regr regu reog reou rera rere rerg rero reru reue reuu rgba rgbe roab roag roar rob- roba robb robe robo robu roea roeg roer roga roge rogg rogo roob roog roor rora rore roro roru roua roub roue rrrr ruag ruba rubb rube rubu ruer ruga ruge rugg rura rure ruro ruru uaru uaua ubar ubba ubbe ubbo uber ubra ueba ugab ugao ugar ugeo uggo ugra ugro ugur uguu uor- uore urao urau urba urbe ure- urea urga urge urgu uro- uroa uroo urra urre urur uuuu