a-be a-fu aaaa aaab aaae aaaf aaap aaar aaba aabb aabp aaea aaep aafa aafb aaff aaoe aaoo aapa aapo aara aare aaro aarp aaru aaup abaa abab abae abaf abap abar abau abb- abba abbb abbe abbo abbr abee aber abff aboa abob abof aboo abor abou abpa abpp abpr abra abro abua abue abuf aeaf aeap aeer aer- aera aero afaa afao afap afar afee afer affa affo afoa afoe afoo afor afpa afpe afr- afra afre afro afru afua afue aoba aoeu aopo aora aorb aouf apao apap apar apba apbr apea apep aper apeu apfa apfo apo- apoe apof apoo apop apor apou appa appr appu apra apre apro apua apup arab arae araf arap arar arau arba arbe area aree aref areo arep areu arfa arfb arff arfu aroa arob aroe aroo aror arpa arpe arpu arr- arra arre arro arrr arru arua arub arue arup auaa aube auer aufe aur- aura aure auro baaa baaf baar baba babb babe babo babr babu baer baff bafo bapa bape bapp bapu bar- bara barb bare barf baro barr baru bau- bauf baur bbau bbbb bbeb bbpr beaf beap bear beau beba bebb bebe bebo beeb beef beep beer befa befe beff befo beo- beof beor bepo bera bere bero berr beru beur bfpo bfpp boab boar boba bobb bobe bobo bobu boea boee boef boeo boep boer bofa bofe boff bofu boob booe boof boop boor bopa bope bopp bor- bora bore borf boro borr boru boua boue bouf boup bour bpea bpoe brab brae braf brao brau brea breb bree bref breo brep brer brfu broa brob broe broo bror brou brrr brue brup buar buba bubb bube bubo bubu buea buer bueu bufe buff bufo bufr bupa bur- bura burb bure buro burp burr buru eaaf eaba eafb eaop eapp eara earb eare earo earp ebba ebbo ebbr eber eboe eboo ebor ebpo ebro ebru ebur eeea eeee eefa eefe eera eero efab efbr efeo effa efor efpa efua eora eore epaa epee eper epfa epor eppa eppo eppp epra eprb epro eprp epub eraf erap erau erba erbb erbe ereb erer erob eroe eroo erpa erpe erra erre erro erua erub erur euba euer eur- eura eure euro faaa faap faba fabe fabo fabu faeb fafa fafe faff fafo fapa fape fapp fara farb fare faro farp farr faru faue faur fbar fbop feaf feap fear feba febo feeb feer fefe feff fefo feof fepa fera ferb fere fero ferr feru ffar ffee ffff ffrr foaf foar foba foer fofo foof fopp for- fora forb fore foro forr foua foup four fpaa fpra fprf frab frae frap frau frea free freo frep frob froe frop frou frub frue fuar fubb fubu fuff fufu fuor fur- fura fure furo furr o-eo oaau oaer oafo oara oare obba obbo obea ober oboe obor obra obre obro oepa oera oere oeuf ofer off- offa offe offo offr offu ofor ofra ofre ooaa ooba oobe ooer ooff oooo oora oore opap opar opep oper opo- opor oppa oppo opra opua orab orae orao orar orba orbb orbe orbo orbu ore- orea oreb oreo orer orfe orff orfu oro- oroe orof oror orpe orra orro orub orup ouea ouer oufe ouff oupa oupe our- oura oure ouro ouu- paap paar paba pabu paea paep paer pafa pafe paff papa papb pape papp papr par- para pare parf paro parp parr paru paua paup paur pbar pbpa pbrf peab peap pear peau peba peep peer peff peor peou pepa pepe pepo per- pera pere perf pero perp perr peru peur pfaa pfff pffr pfra poar poba pobo poea poer poff poof poop poor pop- popa pope popo popp pora porb pore poro porr pouf poup pour ppap ppar pper ppfa ppoa pppa pppo pppp pprf ppru ppur prae prao prar prau pre- preb pree pref prep preu pro- proa prob proe prof proo prop prou prue pruf pruu pu-e puao puar pube pubu pueo puer pueu puff pupa pupe pupu pur- pura purb pure puro purp purr puru raab raaf raba rabb rabe rabo rabu raef raep raer rafa rafe raff raob raop rapa rape rapp rara rarb rare rarf raro raua raub raue rauf raup rbaf rbbb rbbr rea- reae reaf reao reap rear reau reba rebb rebe rebo rebu reeb reef reep refe reff refr refu reof reop reou repe repo repp repr repu rera rere rero reru reue reuf reup reuu rfae rfef roab roaf roap roar rob- roba robb robe robo robu roea roer rofe roff rofo roob roof roop roor ropa rope ropo rora rore roro roru roua roub roue rouf roup rpob rpoe rpof rrrr ruba rubb rube rubp rubu ruer rufa rufe ruff rufo rupa rupe rupp rura rure ruro rurp ruru u-rp uafa uaru uaua ubar ubba ubbe ubbo uber ubra ueba uefa ufer uffa uffe ufpb ufra uofa uofo uor- uore upar upbe upor uppa uppe uppp uppu upra upup urao urap urau urba urbe ure- urea urfa urfe urff uro- uroa uroo urpo urra urre urup urur uuuu