a-be a-fu aaaa aaab aaae aaaf aaar aaba aabb aaea aafa aafb aaff aage aara aare aaru abaa abab abae abaf abag abar abau abax abb- abba abbb abbe abbr abee aber abff abra abua abue abuf abug aeaf aeer aega aer- aera afaa afar afee afer affa afgf afr- afra afre afru afua afue afxe agag agar agau agba agea agee ager agfa agga agge aggu agra agre agua ague agur arab arae araf arag arar arau arax arba arbe area aree aref areg areu arex arfa arfb arff arfu arga argb arge arr- arra arre arrg arrr arru arua arub arue arug auaa aube auer aufe auga auge aur- aura aure auug auxa axaf axar axer axfr ba-x baaa baaf baar baba babb babe babr babu baer baff baga bage bagg bar- bara barb bare barf barg barr baru barx bau- bauf baug baur baux bbau bbbb bbeb bbga bbrg beaf beag bear beau beba bebb bebe beeb beef beeg beer befa befe beff bega begg begu bera bere berg berr beru beur beux bfgf brab brae braf brag brau brax brea breb bree bref breg brer brex brfu brrr brue brug brux buar buba bubb bube bubu buea buer bueu bufe buff bufr buga buge bugg bur- bura burb bure burg burr buru buxa eaaf eaba eafb eaga eage eara earb eare eaux ebba ebbr eber ebru ebur eeea eeee eefa eefe eega eera eerg ef-g efab efax efbr effa efua egaa egae egar egba egbe egbu egea egee eger egfr eggb egge egra egre er-x eraf erau erba erbb erbe ereb erer erfx erg- erga ergg erra erre erua erub erur euba euer euge eur- eura eure exa- exer exge exrx faaa faba fabe fabu faeb faex fafa fafe faff fafg fage fagg fagu fara farb fare farg farr faru faue faur faux faxe fbar feaf fear feba feeb feer fefe feff fege fegg fera ferb fere ferr feru feux ffar ffee ffff ffrr frab frae frag frau frax frea free frex frub frue frug fuar fubb fubu fuff fufu fuga fuge fugu fur- fura fure furg furr gaar gaba gabb gabe gabr gabu gaea gaer gafa gafb gaff gaga gage gagg gagu gara garb gare garf garg garr gaua gaub gaue gaur gbag geab gear geba gebe geer gefe gege gegg gera gerb gere geru geue gfer gffa ggfg gggg grab grae graf grau grbr grea greb gree gref greg greu grex grfa grrr grua grub grue gruf grug grur guaa guag guar guba gubb gubu guer gufa guff guga gugb guge gugg gugu gura gurb gure gurg gurr guru raab raaf raag raba rabb rabe rabu raef raeg raer rafa rafe raff raga rage ragg ragu rara rarb rare rarf raua raub raue rauf raxa rbaf rbbb rbbr rea- reae reaf rear reau reba rebb rebe rebu reeb reef refe reff refg refr refu rega rege regr regu rera rere rerg reru reue reuf reuu reux rexx rfae rfef rgba rgbe rrrr ruag ruba rubb rube rubu ruer rufa rufe ruff ruga ruge rugg rura rure ruru uafa uaru uaua ubar ubba ubbe uber ubra ueba uefa ufag ufer uffa uffe ufra ugab ugar ugra ugur uguu urau urba urbe ure- urea urex urfa urfe urff urga urge urgu urra urre urur uuuu uxue xaar xaga xara xare xbar xbee xbra xeer xefe xega xer- xera xexe xfer xura xuxa xuxu xxxx