a-be a-do aaaa aaab aaad aaae aaap aaar aaba aabb aabd aabp aada aade aaea aaep aaoe aaoo aapa aapo aara aard aare aaro aarp abaa abab abad abae abap abar abb- abba abbb abbe abbo abbr abda abdo abed abee aber aboa abob abod 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 adob adod adoe adoo ador adp- adra adre adro aeap aede aeer aer- aera aerd aero aoba aopo aora aorb apao apap apar apba apbr apda apdd apea aped apep aper apo- apod apoe apoo apop apor appa appd appr apra apre apro arab arad arae arap arar arba arbe arda arde ardo area ared aree areo arep aroa arob arod aroe aroo aror arpa arpe arr- arra arre arro arrr baaa baad baar baba babb babe babo babr bada badb badd bade bado badr baed baer bapa bape bapp bar- bara barb bard bare baro barr bbad bbbb bbdd bbdo bbeb bbpr bd-r bead beap bear beba bebb bebe bebo beda bede bedo beeb beed beep beer beo- beod beor bepo bera berd bere bero berr boab boad boar boba bobb bobe bobo boda bodb bode bodo boea boee boeo boep boer boob bood booe boop boor bopa bope bopp bor- bora bord bore boro borr bpda bpea bpoe bprd brab brad brae brao brda brdo brea breb bred bree 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 dapa dape dapp dara darb dard dare daro darp darr dbar dbpd dddd ddpo ddre dead deae deap dear deba debe deda dedd dede dedo deeb deed deep deer deop deor depa depe depo depp depr der- dera derb dere dero derp derr doab doae doap doar doba dobb dobe dod- doda dodd dode dodo doea doer doob dood doop door dopa dope dopo dopp dopr dora dord dore doro dorp dorr dpaa dper dppa draa drab drad drap drar drba drda drea dred dree drob drod drop drra eaba eada eadb eadd eadp 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 edod edra eede eeea eeee eera eero eode eora eore epaa epad epee eper epod epor eppa eppo eppp epra eprb epro eprp erad erap erba erbb erbe erda erde ereb ered erer erob erod eroe eroo erpa erpe erra erre erro o-eo oade oaer 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 ooaa ooba oobe ooda ooer 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 oro- oroe oror orpe orra orro paap paar paba pada padd pade pado paea paep paer papa papb pape papp papr par- para pard pare paro parp parr pbar pbed pbpa pdea pdpa pdpr peab peap pear peba ped- peda pede pedo peed peep peer peor pepa pepd pepe pepo per- pera perd pere pero perp perr poad poar poba pobo pod- poda podd pode podo poea poed poer pood poop poor pop- popa pope popo popp pora porb pore poro porr ppad ppap ppar pper ppoa ppod pppa pppd pppo pppp prad prae prao prar pre- preb pred pree prep pro- proa prob prod proe proo prop prpd prrd raab raad raba rabb rabe rabo rada radd rade rado radr raed raep raer raob raop rapa rapd rape rapp rara rarb rare raro rbbb rbbr rdap rdbp rder rea- read reae reao reap rear reba rebb rebe rebo reda redd rede redo redr reeb reed reep reod reop repe repo repp repr rera rerd rere rero roab road roap roar rob- roba robb robe robo roda rodd rode rodo roea roed roer roob rood roop roor ropa rope ropo rora rore roro rpdp rpob rpoe rrad rred rrrr