-er a-a a-b a-t aaa aab aae aar aat aau ab- aba abb abe abr abt abu aea aeb aee aer aet aeu ar- ara arb are arr art aru at- ata atb ate atr att atu au- aua aub aue aur aut b-u baa bab bae bar bat bau bba bbb bbe bbr bbt bbu be- bea beb bee ber bet beu bra brb bre brr brt bru bta btb bte btr btt btu bua bub bue bur but buu eaa eab eae ear eat eau eba ebb ebe ebr ebt ebu eea eeb eee eer eet era erb ere err ert eru eta etb ete etr ett etu eu- eua eub eue eur eut ra- raa rab rae rar rat rau rba rbb rbe rbr rbt rbu re- rea reb ree rer ret reu rra rrb rrr rrt rru rta rtb rte rtr rtt rtu rua rub rue rur rut ruu taa tab tae tar tat tau tba tbb tbe tbr tbt tbu te- tea teb tee ter tet teu tra trb tre trr trt tru tta ttb tte ttr ttt ttu tua tub tue tur tut tuu ua- uaa uab uae uar uat uau uba ubb ube ubr ubt ubu uea ueb uee uer uet ur- ura urb ure urr urt uru uta utb ute utr utt utu uua uue uur uut uuu

a-be aaaa aaab aaae aaar aaba aabb aabt aaea aara aare aart aaru aata aatt abaa abab abae abar abat abau abb- abba abbb abbe abbr abbt abee aber abet abra abta abtu abua abue abut aeer aer- aera aeta aetr aett arab arae arar arat arau arba arbe area aree aret areu arr- arra arre arrr arrt arru arta arte artr arua arub arue arut at-t ataa atab atae atar atat atea atee ater atra atre atru atta atte attr attu atua atub atur auaa aube auer aur- aura aure aut- aute baaa baar baat baba babb babe babr babu baer bar- bara barb bare barr bart baru bata bate batt batu bau- baur bbau bbbb bbeb bbet bear beat beau beba bebb bebe beeb beer beet bera bere berr bert beru beta bete bett betu beur brab brae brat brau brea breb bree brer bret brrr brue brut btaa btrt bttb buar buat buba bubb bube bubu buea buer bueu bur- bura burb bure burr burt buru but- buta bute butt eaba eara earb eare eart eata eate ebba ebbr eber ebru ebur eeea eeee eera eeta eete eetu erat erau erba erbb erbe ereb erer eret erra erre erta ertu erua erub erur etat etbr etee eter etra etre etta ette ettu etua euba euer eur- eura eure eurt raab raat raba rabb rabe rabu raer rara rarb rare rata rate ratt ratu raua raub raue raut rbbb rbbr rea- reae rear reat reau reba rebb rebe rebu reeb reet rera rere rert reru reta rete retr rett reue reut reuu rrat rrrr rtee ruba rubb rube rubu ruer ruet rura rure ruru ruta rute rutt rutu taa- taar taat taba tabb tabe tabu taer tara tarb tare tarr tart taru tata tatb tate tatr tatt tatu taua taub taue taur taut tbar tbrb tbta tear teat teba tebu teer teet ter- tera tere terr teru teta tete tetr tett tetu teut traa trab trae trat trau tre- trea tree tret treu trra trte trtr trub true trut truu ttab ttbb tter tttt tuae tuar tuat tuba tubb tube tubr tubu tuer tuet tura turb ture turr turt turu tuta tute tutt tutu uart uaru uata uatu uaua ubar ubba ubbe uber ubet ubra ueba urat urau urba urbe ure- urea uret urra urre urte urur urut utau uter uttu uuta uuuu

-aaa- -tree aaaee aaata aabaa aabba aabra aarau abaab ababa ababe ababu abaer abara abare abaru abate abbar abbat abbet abbur abear abeat abeau abeba abebe abeer abeet abera abere aberr abert abrar abreu abtaa abtar abura aburr abuta abute abutt aeaea aebbe aerru aetat aeter ar-ab araat arab- araba arabe araea arara arare araru arata arate arbab arbar arbat arbee arber arbet arbre areae arear areat areet arere arete arett arrau arrea arret arrua artar artat artea arter artur aruaa aruba arura aruru aruta atabu atara ataru atbar atbat atear ateat ater- aterr atete atrab atree atrue attar attea atter attra attur atube atura auber auete aurae aurar aurat aurea aurra autee auter autet autre baabe baart baata baate babar babau babee baber babra babur babut baert baraa barab barar barat barba barbe barbu barea barer baret barra barre barru barta barua barut batab batar batat batau batea bater batra batre batta batte battu batur bauer baura baure bauru bauta bbart bbbee bbear be-er beara beare beart beata beate beaut bebar bebat beber bebra beebe beete beeut berar berat berau berba berbe berea beret berra berre berru berta berte betar betee beter betra betre bett- betta bette beuer beure beute braat brate bratt bratu braut breba brebu breer breet brera brere brett breu- brrar brrrr bruer bruet bruta brute btr-t bubba bubbe buber buraa burat burea buret burra burru burta burte burtt burut butat butea buter butte butua butut earar eartu eatat eater eatre ebara ebart ebate ebber ebbet ebert ebure eeeee erate erbaa erbar erbbe erber erear erere errat errtu ertar erte erter etate etete etree etter eturu etuta eurre ra-ra raaba raabe rabab rabat rabba rabbe rabet rabta rabut rarae rareb raree rarer ratau ratba rateb rater ratra ratta ratte rattu ratua rauta raute rear- reata reate reaue rebab rebar rebat rebbe reber rebet rebra rebut reere rere- reree reret retab retar retee reter retta rette reuar reuer reuet reute rubab rubat rubba rubee ruber rubra ruere ruete rutab rutar ruter rutte ruutu t-ara t-bar ta-ra ta-ta ta-tu taart tabae tabar tabat taber tabet tabra tabre tabua tabur tabut tarar tarat taree tarer taret tarra tarre tarta tarte tartt tartu tarur tataa tatar tatau tatee tater tatra tatre tatta tattu taube tauer taur- taura taure taut-