a-be aaaa aaab aaae aaaf aaar aaba aabb aaea aafa aafb aaff aage aaoe aaoo aara aare aaro abaa abab abae abaf abag abar abb- abba abbb abbe abbo abbr abee aber abff aboa abob abof aboo abor abra abro aeaf aeer aega aer- aera aero afaa afao afar afee afer affa affo afgf afoa afoe afog afoo afor afr- afra afre afro ag-o agag agao agar agba agbo agea agee ager agfa agga agge agob agog agoo agra agre agro aoba aora aorb arab arae araf arag arar arba arbe area aree aref areg areo arfa arfb arff arga argb arge argo aroa arob aroe aroo aror arr- arra arre arrg arro arrr baaa baaf baar baba babb babe babo babr baer baff bafo baga bage bagg bago bar- bara barb bare barf barg baro barr bbbb bbeb bbga bbrg beaf beag bear beba bebb bebe bebo beeb beef beeg beer befa befe beff befo bega begg bego beo- beof beor bera bere berg bero berr bfgf boab boag boar boba bobb bobe bobo boea boee boef boeo boer bofa bofe boff boga boge bogg bogo boob booe boof boog boor bor- bora bore borf borg boro borr brab brae braf brag brao brea breb bree bref breg breo brer broa brob broe brog broo bror brrr eaaf eaba eafb eaga eage eara earb eare earo ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eefa eefe eega eera eerg eero ef-g efab efbr efeo effa efor egaa egae egao egar egba egbe egea egee eger egfr eggb egge eggo ego- egor egra egre eora eore eraf erba erbb erbe ereb erer erg- erga ergg ergo erob eroe eroo erra erre erro faaa faba fabe fabo faeb fafa fafe faff fafg fafo fage fagg fago fara farb fare farg faro farr fbar feaf fear feba febo feeb feer fefe feff fefo fege fegg feof fera ferb fere fero ferr ffar ffee ffff ffrr foaf foar foba foer fofo foge fogg fogo foof for- fora forb fore forg foro forr frab frae frag frea free freo frob froe frog gaar gaba gabb gabe gabo gabr gaea gaer gafa gafb gaff gaga gage gagg gago gara garb gare garf garg garo garr gbag gbbo geab gear geba gebe geer gefe gege gegg gego geo- geof geog gera gerb gere gero gfer gffa gfoa gfor ggfg gggg goaf goar goba gobe gobo goef goer gofe goff gofr goga gogo goof goog goor gora gorb gore gorf gorg goro gorr grab grae graf grbr grea greb gree gref greg grfa grob grof grog groo gror grrr o-eo oaer oafo oara oare obba obbo obea ober oboe obor obra obre obro oegb oera oere ofer off- offa offe offo offr ofgo ofor ofra ofre ogae ogar ogb ogba ogbe ogea ogee oger ogfr ogge ogoa ogog ogra ogre ogro ooaa ooba oobe ooer ooff oooo oora oore orab orae orao orar orba orbb orbe orbo ore- orea oreb oreg oreo orer orfe orff orga orge orgo oro- oroe orof oror orra orro raab raaf raag raba rabb rabe rabo raef raeg raer rafa rafe raff raga rage ragg rago raob rara rarb rare rarf raro rbaf rbbb rbbr rea- reae reaf reao rear reba rebb rebe rebo reeb reef refe reff refg refr rega rege rego regr reof reog rera rere rerg rero rfae rfef rgba rgbe roab roaf roag roar rob- roba robb robe robo roea roeg roer rofe roff rofo roga roge rogg rogo roob roof roog roor rora rore roro rrrr