a-be a-ha aaaa aaab aaae aaah aaap aaar aaba aabb aabh aabp aaea aaep aaha aaoe aaoo aapa aaph aapo aara aare aaro aarp abaa abab abae abap abar abb- abba abbb abbe abbo abbr abee aber abha abho abhr aboa abob aboh aboo abor abpa abpp abpr abra abro aeap aeer aer- aera aero ahab ahah ahar ahha ahoa ahoe ahop ahor ahra ahre ahrr aoah aoba aopo aora aorb apah apao apap apar apba apbr apea apeh apep aper aph- apha apo- apoe apoo apop apor appa apph appr apra apre apro arab arae arah arap arar arba arbe arbh area aree areh areo arep arh- aroa arob aroe aroo aror arpa arpe arr- arra arre arrh arro arrr baaa baah baar baba babb babe babo babr baer baha baho bahr baoh bapa bape bapp bar- bara barb bare barh baro barr bbbb bbeb bbpr beah beap bear beba bebb bebe bebo beeb beep beer behr beo- beor bepo bera bere bero berr bhao bhar bher bhor bhra boab boar boba bobb bobe bobo boea boee boeo boep boer boha boho bohr boob booe booh boop boor bopa bope bopp bor- bora bore borh boro borr bpea bpoe brab brae brah brao brea breb bree breo brep brer broa brob broe broh broo bror brrr eaba eabh eaop eapp eara earb eare earh earo earp ebba ebbo ebbr eber eboe eboo ebor ebpo ebro eeea eeee eera eero ehaa ehea eheh eher ehre eora eore epaa epee eper eph- epha epor eppa eppo eppp epra eprb epro eprp erap erba erbb erbe ereb erer erob eroe eroo erpa erpe erra erre erro haab haar haba habe habo haha haho haor hapa hape happ hara hare harh haro harp harr hbar heah heap hear hebb hebe hebo hebr heeb heep heer hehe heho heor hepa hepe hepp hera herb here hero herp herr hhaa hhhh hhpa hoap hoar hoba hobe hobo hoer hoha hohe hoho hooe hoop hoor hopa hope hopo hopp hora hore horo horr hpae hpao hppe hrap hree hrob hrpp o-eo oaer oahe oahp oaph oara oare obba obbo obea ober oboe obor obra obre obrh obro oepa oera oere ohba ohbe ohee oher ohho ohob ohoh ohra ohre ooaa ooba oobe ooer ooha ooho oooh oooo oora oore opah opap opar opep oper opo- opor oppa oppo opra orab orae orah orao orar orba orbb orbe orbo ore- orea oreb oreh oreo orer orhe oro- oroe oror orpe orph orra orro paap paar paba paea paep paer paha paho pahp paoh papa papb pape papp papr par- para pare paro parp parr pbar pbpa peab peah peap pear peba peep peer peha pehe peho pehr peor pepa pepe pepo per- pera pere perh pero perp perr phah phar phe- phob phoh phoo phpa phrr poar poba pobo poea poer poha pooh poop poor pop- popa pope popo popp pora porb pore poro porr ppap ppar pper ppoa pppa pppo pppp prae prao prar pre- preb pree prep pro- proa prob proe proo prop raab raba rabb rabe rabo raep raer raha rahe rahr raob raoh raop rapa rape raph rapp rara rarb rare raro rbbb rbbr rboh rea- reae reao reap rear reba rebb rebe rebo reeb reep reha rehb rehe reop repe repo repp repr rera rere rero rhae rhap rhea rheb rhee rheo rhoa rhob rhoh roab roap roar rob- roba robb robe robo roea roer roha rohe rohr roob roop roor ropa rope ropo rora rore roro rpho rpob rpoe rrah rrrr