-er a-a a-b a-t aaa aab aae aar aat aau aav ab- aba abb abe abr abt abu abv aea aeb aee aer aet aeu aev ar- ara arb are arr art aru arv at- ata atb ate atr att atu atv au- aua aub aue aur aut auv av- ava avb ave avr avt avu b-u baa bab bae bar bat bau bav bba bbb bbe bbr bbt bbu be- bea beb bee ber bet beu bev bra brb bre brr brt bru brv bta btb bte btr btt btu btv bua bub bue bur but buu bva bvb bve bvr bvt bvu bvv eaa eab eae ear eat eau eav eba ebb ebe ebr ebt ebu ebv eea eeb eee eer eet eev era erb ere err ert eru erv eta etb ete etr ett etu etv eu- eua eub eue eur eut euv eva evb eve evr evt evv ra- raa rab rae rar rat rau rav rba rbb rbe rbr rbt rbu re- rea reb ree rer ret reu rev rra rrb rrr rrt rru rta rtb rte rtr rtt rtu rtv rua rub rue rur rut ruu ruv rva rvb rve rvr rvt rvu rvv taa tab tae tar tat tau tav tba tbb tbe tbr tbt tbu tbv te- tea teb tee ter tet teu tev tra trb tre trr trt tru trv tta ttb tte ttr ttt ttu ttv tua tub tue tur tut tuu tuv tva tvb tve tvr tvt tvu ua- uaa uab uae uar uat uau uav uba ubb ube ubr ubt ubu ubv uea ueb uee uer uet ur- ura urb ure urr urt uru uta utb ute utr utt utu utv uua uue uur uut uuu uva uvb uve uvu uvv v-a v-e vaa vab vae var vat vau vav vba vbr vbv vea veb vee ver vet veu vra vrb vre vrr vrt vru vta vtb vte vtr vtt vtu vtv vue vur vut vuv vva vvb vvr vvt vvv

a-be aaaa aaab aaae aaar aaav aaba aabb aabt aaea aaev aara aare aart aaru aata aatt aava abaa abab abae abar abat abau abb- abba abbb abbe abbr abbt abee aber abet abra abta abtu abua abue abut abva aeer aer- aera aeta aetr aett aeva arab arae arar arat arau arba arbe area aree aret areu arev arr- arra arre arrr arrt arru arta arte artr artv arua arub arue arut arva arve 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 auve avab avar avat avea aver aveu avra avre avur avva baaa baar baat baba babb babe babr babu baer bar- bara barb bare barr bart baru bata bate batt batu bau- baur bava bave bavu bbau bbbb bbeb bbet bear beat beau beav beba bebb bebe beeb beer beet bera bere berr bert beru beta bete bett betu betv beur brab brae brat brau brav brea breb bree brer bret brev brrr brue brut bruv btaa btrt bttb buar buat buba bubb bube bubu buea buer bueu bur- bura burb bure burr burt buru but- buta bute butt buve eaba eara earb eare eart eata eate eave ebba ebbr eber ebru ebur eeea eeee eera eeta eete eetu eeva erat erau erba erbb erbe ereb erer eret erev erra erre erta ertu erua erub erur eruv erve etat etbr etee eter etra etre etta ette ettu etua euba euer eur- eura eure eurt evae evar evat evea ever evet evra evre raab raat raba rabb rabe rabu raer rara rarb rare rata rate ratt ratu raua raub raue raut rava rave rbbb rbbr rea- reae rear reat reau reba rebb rebe rebu reeb reet reev rera rere rert reru reta rete retr rett reue reut reuu reva reve rrat rrrr rtee rtva rtve ruba rubb rube rubu ruer ruet rura rure ruru ruta rute rutt rutu ruve ruvu rver taa- taar taat taba tabb tabe tabu taer tara tarb tare tarr tart taru tata tatb tate tatr tatt tatu tatv taua taub taue taur taut tava tave tbar tbrb tbta tear teat teba tebu teer teet teev ter- tera tere terr teru teta tete tetr tett tetu teut teva traa trab trae trat trau trav tre- trea tree tret treu trev 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 tuva tver tvrr tvtv uart uaru uata uatu uatv uaua ubar ubba ubbe uber ubet ubra ueba urat urau urba urbe ure- urea uret urra urre urte urur urut urva urve utau uter uttu uuta uuuu uv-a uv-b uvaa uvae uvat uvea uver uvvu vaar vaat vara vare varr vart varu vata vate vatt vatu vaut vava vear veat veau veba veer veet ver- vera verb vere vert veta vete vetr veur veve vrav vrba vret vurb vurt vutv vver vvvv

-aaa- -tree aaaee aaata aabaa aabba aabra aarau abaab ababa ababe ababu abaer abara abare abaru abate abava abave 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 aerva aetat aeter ar-ab araat arab- araba arabe araea arara arare araru arata arate arava arave aravu arbab arbar arbat arbee arber arbet arbre areae arear areat areet arere arete arett areva arrau arrea arret arrua artar artat artea arter artur aruaa aruba arura aruru aruta aruvu arvar atabu atara ataru atbar atbat atear ateat ater- aterr atete ateve atrab atree atrue attar attea atter attra attur atube atura atvr auber auete aurae aurar aurat aurea aurra aurva autee auter autet autre avara avare avber avebe aveer aver- avera averb avert aveta avett aveva aveve avree baabe baart baata baate baava babar babau babee baber babra babur babut baert baraa barab barar barat barba barbe