a-be a-do aaaa aaab aaad aaae aaaf aaap aaar aaba aabb aabd aabp aada aade aaea aaep aafa aafb aafd aaff aaoe aaoo aapa aapo aara aard aare aaro aarp abaa abab abad abae abaf abap abar abb- abba abbb abbe abbo abbr abda abdo abed abee aber abff aboa abob abod abof aboo abor abpa abpd abpp abpr abra abro adaa adab adad adae adao adap adar adba adda addd adde addo addr adea adeb adee adeo ader adfa adob adod adoe adoo ador adp- adra adre adro aeaf aeap aede aeer aer- aera aerd aero afaa afad afao afap afar afdb afee afer affa affo afoa afoe afoo afor afpa afpe afr- afra afre afro aoba aopo aora aorb apao apap apar apba apbr apda apdd apea aped apep aper apfa apfo apo- apod apoe apof apoo apop apor appa appd appr apra apre apro arab arad arae araf arap arar arba arbe arda arde ardf ardo area ared aree aref areo arep arfa arfb arff aroa arob arod aroe aroo aror arpa arpe arr- arra arre arro arrr baaa baad baaf baar baba babb babe babo babr bada badb badd bade bado badr baed baer baff bafo bapa bape bapp bar- bara barb bard bare barf baro barr bbad bbbb bbdd bbdo bbeb bbpr bd-r bead beaf beap bear beba bebb bebe bebo beda bede bedo beeb beed beef beep beer befa befe beff befo beo- beod beof beor bepo bera berd bere bero berr bfpo bfpp boab boad boar boba bobb bobe bobo boda bodb bode bodo boea boee boef boeo boep boer bofa bofd bofe boff boob bood booe boof boop boor bopa bope bopp bor- bora bord bore borf boro borr bpda bpea bpoe bprd brab brad brae braf brao brda brdo brea breb bred bree bref breo brep brer broa brob brod broe broo bror brrr d-bo daab daad daae daap daar daba dabb dabo dabp dada dade dado daeb daer dafa dafe daff dafo dapa dape dapp dara darb dard dare darf daro darp darr dbar dbfo dbpd dbpf dddd ddpo ddre dead deae deaf deap dear deba debe deda dedd dede dedo deeb deed deef deep deer defe deff defo deop deor depa depe depo depp depr der- dera derb dere derf dero derp derr dfaf dfer dffa dfoe dfrf doab doae doap doar doba dobb dobe dod- doda dodd dode dodo doea doer doff doob dood doof doop door dopa dope dopo dopp dopr dora dord dore dorf doro dorp dorr dpaa dper dppa draa drab drad draf drap drar drba drda drea dred dree dref drob drod drof drop drra eaaf eaba eada eadb eadd eadp eafb eaop eapp eara earb eard eare earo earp ebba ebbo ebbr ebed eber eboe eboo ebor ebpo ebro edad edar edda edde eddo eddp ede- edea eder edfa edod edra eede eeea eeee eefa eefe eera eero efab efbr efda efeo effa efor efpa eode eora eore epaa epad epee eper epfa epod epor eppa eppo eppp epra eprb epro eprp erad eraf erap erba erbb erbe erda erde erdf ereb ered erer erob erod eroe eroo erpa erpe erra erre erro faaa faad faap faba fabd fabe fabo fada fadd fade fado faeb fafa fafe faff fafo fapa fape fapp fara farb fard fare faro farp farr fbar fbop fdoa fead feaf feap fear feba febo feda fede feeb feed feer fefe feff fefo feod feof fepa fera ferb ferd fere fero ferr ffar ffee ffff ffrr foad foaf foar foba foda fode foed foer fofo food foof fopp for- fora forb ford fore foro forr fpaa fpda fpra fprf frab frad frae frap frea fred free freo frep frob froe frop frpd o-eo oade oaer oafo oara oare obad obba obbo obea obed ober oboe obor obra obre obro odbo odda oddd odea oded odeo oder odoo odop odor odra odrp oedo oepa oera oere ofdr ofer off- offa offe offo offr ofor ofra ofre ooaa ooba oobe ooda ooer ooff oooo oora oord oore opap opar oped opep oper opo- opor oppa oppo opra orab orad orae orao orar orba orbb orbe orbo orda orde ordo ore- orea oreb ored oreo orer orfe orff oro- oroe orof oror orpe orra orro paap paar paba pada padd pade pado paea paep paer pafa pafe paff papa papb pape papp papr par- para pard pare parf paro parp parr pbar pbed pbpa pbrf pdaf pdea pdfa pdpa pdpr peab peap pear peba ped- peda pede pedf pedo peed peep peer peff peor pepa pepd pepe pepo per- pera perd pere perf pero perp perr pfaa pfff pffr pfra poad poar poba pobo pod- poda podd pode podo poea poed poer poff pood poof poop poor pop- popa pope popo popp pora porb pore poro porr ppad ppap ppar pper ppfa ppoa ppod pppa pppd pppo pppp pprf prad prae prao prar pre- preb pred pree pref prep pro- proa prob prod proe prof proo prop prpd prrd raab raad raaf raba rabb rabe rabo rada radd rade rado radr raed raef raep raer rafa rafe raff raob raop rapa rapd rape rapp rara rarb rare rarf raro rbaf rbbb rbbr rdap rdbp rder rdfa rea- read reae reaf reao reap rear reba rebb rebe rebo reda redd rede redo redr reeb reed reef reep refd refe reff refr reod reof reop repe repo repp repr rera rerd rere rero rfae rfef roab road roaf roap roar rob- roba robb robe robo roda rodd rode rodo roea roed roer rofe roff rofo roob rood roof roop roor ropa rope ropo rora rore roro rpdp rpob rpoe rpof rrad rred rrrr