-er a-a a-b a-t aaa aab aae aar aat aav ab- aba abb abe abr abt abv aea aeb aee aer aet aev ar- ara arb are arr art arv at- ata atb ate atr att atv av- ava avb ave avr avt baa bab bae bar bat bav bba bbb bbe bbr bbt be- bea beb bee ber bet bev bra brb bre brr brt brv bta btb bte btr btt btv bva bvb bve bvr bvt bvv eaa eab eae ear eat eav eba ebb ebe ebr ebt ebv eea eeb eee eer eet eev era erb ere err ert erv eta etb ete etr ett etv eva evb eve evr evt evv ra- raa rab rae rar rat rav rba rbb rbe rbr rbt re- rea reb ree rer ret rev rra rrb rrr rrt rta rtb rte rtr rtt rtv rva rvb rve rvr rvt rvv taa tab tae tar tat tav tba tbb tbe tbr tbt tbv te- tea teb tee ter tet tev tra trb tre trr trt trv tta ttb tte ttr ttt ttv tva tvb tve tvr tvt v-a v-e vaa vab vae var vat vav vba vbr vbv vea veb vee ver vet vra vrb vre vrr vrt vta vtb vte vtr vtt vtv vva vvb vvr vvt vvv

a-be aaaa aaab aaae aaar aaav aaba aabb aabt aaea aaev aara aare aart aata aatt aava abaa abab abae abar abat abb- abba abbb abbe abbr abbt abee aber abet abra abta abva aeer aer- aera aeta aetr aett aeva arab arae arar arat arba arbe area aree aret arev arr- arra arre arrr arrt arta arte artr artv arva arve at-t ataa atab atae atar atat atea atee ater atra atre atta atte attr avab avar avat avea aver avra avre avva baaa baar baat baba babb babe babr baer bar- bara barb bare barr bart bata bate batt bava bave bbbb bbeb bbet bear beat beav beba bebb bebe beeb beer beet bera bere berr bert beta bete bett betv brab brae brat brav brea breb bree brer bret brev brrr btaa btrt bttb eaba eara earb eare eart eata eate eave ebba ebbr eber eeea eeee eera eeta eete eeva erat erba erbb erbe ereb erer eret erev erra erre erta erve etat etbr etee eter etra etre etta ette evae evar evat evea ever evet evra evre raab raat raba rabb rabe raer rara rarb rare rata rate ratt rava rave rbbb rbbr rea- reae rear reat reba rebb rebe reeb reet reev rera rere rert reta rete retr rett reva reve rrat rrrr rtee rtva rtve rver taa- taar taat taba tabb tabe taer tara tarb tare tarr tart tata tatb tate tatr tatt tatv tava tave tbar tbrb tbta tear teat teba teer teet teev ter- tera tere terr teta tete tetr tett teva traa trab trae trat trav tre- trea tree tret trev trra trte trtr ttab ttbb tter tttt tver tvrr tvtv vaar vaat vara vare varr vart vata vate vatt vava vear veat veba veer veet ver- vera verb vere vert veta vete vetr veve vrav vrba vret vver vvvv

-aaa- -tree aaaee aaata aabaa aabba aabra abaab ababa ababe abaer abara abare abate abava abave abbar abbat abbet abear abeat abeba abebe abeer abeet abera abere aberr abert abrar abtaa abtar aeaea aebbe aerva aetat aeter ar-ab araat arab- araba arabe araea arara arare arata arate arava arave arbab arbar arbat arbee arber arbet arbre areae arear areat areet arere arete arett areva arrea arret artar artat artea arter arvar atara atbar atbat atear ateat ater- aterr atete ateve atrab atree attar attea atter attra atvr avara avare avber avebe aveer aver- avera averb avert aveta avett aveva aveve avree baabe baart baata baate baava babar babee baber babra baert baraa barab barar barat barba barbe barea barer baret barra barre barta barva batab batar batat batea bater batra batre batta batte bavar bavet bavra bbart bbbee bbear be-er beara beare beart beata beate bebar bebat beber bebra beebe beete beeve berar berat berav berba berbe berea beret berra berre berta berte betar betee beter betra betre bett- betta bette bevar bever braat brate bratt brava brave breba breer breet brera brere brett breve brrar brrrr btr-t earar eatat eater eatre eaver ebara ebart ebate ebber ebbet ebert eeeee eevee eever erate erava erbaa erbar erbbe erber erear erere ereve errat ertar erte erter ervat etate etete etree etter evart evate evatt evere everr evert evete evett eveve ra-ra raaba raabe rabab rabat rabba rabbe rabet rabta rarae rareb raree rarer ratba rateb rater ratra ratta ratte ratva ravar ravat raver ravet rear- reata reate reave rebab rebar rebat rebbe reber rebet rebra reere reeve rere- reree reret retab retar retee reter retta rette revar rever revet rtrev t-ara t-bar ta-ra ta-ta taart tabae tabar tabat taber tabet tabra tabre tarar tarat taree tarer taret tarra tarre tarta tarte tartt tarva tarve tataa tatar tatee tater tatev tatra tatre tatta tavar taver tbtbt teaba teaer tear- teara teare teart teave tebar tebat teber tebet tera- terat teret terra terre tert- terve tetar tetea teter tetr- tetra tette tevar tevet traba traer trata trate tratt trava trave treat treba treer treet trere treta trete trett treve ttttt vaara vabre varab varea varra varta varva varve vatav vatea vater vatra vatta vatte vatva vavar vaver vavra vavte veare veber vebre veera veere veeve verae verba verea vereb verra verre verte verve vetra vetta vette vever vrata vreta

aaaaba aavere abaera abaete abarat abarta abatar abatee abater abatte abbate abbett abbrev abeere aberra abrera abreva aerate aetate ararat aratta aravet arbaer arbra areare areata areeta arette arraba arrear arrere arrete artere arteta arvert at-bat ataaba atabae atarba atarra atavar atbara atbear ateret aterre atrata atrate atrear atreat atreet atrete attaea attere atterr attert avatar avatea averea avtaar b-tree baabaa baabar baatar bababe babare babbar babeta baraat barara barata barbae barbar barbat barbee barber barbet