-er a-a a-b a-t aaa aab aae aao aar aat aav ab- aba abb abe abo abr abt abv aea aeb aee aeo aer aet aev aoa aob aoe aoo aor aot aov ar- ara arb are aro arr art arv at- ata atb ate ato atr att atv av- ava avb ave avo avr avt baa bab bae bao bar bat bav bba bbb bbe bbo bbr bbt be- bea beb bee beo ber bet bev boa bob boe boo bor bot bov bra brb bre bro brr brt brv bta btb bte bto btr btt btv bva bvb bve bvo bvr bvt bvv eaa eab eae eao ear eat eav eba ebb ebe ebo ebr ebt ebv eea eeb eee eeo eer eet eev eo- eoa eob eoe eoo eor eot era erb ere ero err ert erv eta etb ete eto etr ett etv eva evb eve evo evr evt evv oaa oab oae oao oar oat oav ob- oba obb obe obo obr obt obv oea oeb oee oeo oer oet oo- ooa oob ooo oor oot oov or- ora orb ore oro orr ort orv ot- ota otb ote oto otr ott otv ov- ova ovb ove ovo ovv ra- raa rab rae rao rar rat rav rba rbb rbe rbo rbr rbt re- rea reb ree reo rer ret rev roa rob roe roo ror rot rov rra rrb rrr rrt rta rtb rte rto rtr rtt rtv rva rvb rve rvo rvr rvt rvv taa tab tae tao tar tat tav tba tbb tbe tbo tbr tbt tbv te- tea teb tee teo ter tet tev to- toa tob toe too tor tot tov tra trb tre tro trr trt trv tta ttb tte tto ttr ttt ttv tva tvb tve tvo tvr tvt v-a v-e vaa vab vae vao var vat vav vba vbo vbr vbv vea veb vee veo ver vet voa vob voe voo vor vot vov vra vrb vre vrr vrt vta vtb vte vto vtr vtt vtv vva vvb vvo vvr vvt vvv

a-be aaaa aaab aaae aaar aaav aaba aabb aabt aaea aaev aaoe aaoo aara aare aaro aart aata aatt aava abaa abab abae abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abov abra abro abta abva aeer aer- aera aero aeta aeto aetr aett aeva aoba aora aorb aort arab arae arar arat arba arbe area aree areo aret arev aroa arob aroe aroo aror arr- arra arre arro arrr arrt arta arte arto artr artv arva arve arvo at-t ataa atab atae atar atat atea atee ateo ater atob atoe ator atot atra atre atro atta atte atto attr avab avao avar avat avea aveo aver avor avot avra avre avro avva avvo baaa baar baat baba babb babe babo babr baer bar- bara barb bare baro barr bart bata bate bato batt bava bave bbbb bbeb bbet bear beat beav beba bebb bebe bebo beeb beer beet beo- beor beot bera bere bero berr bert beta bete beto bett betv bevo boab boar boat boba bobb bobe bobo boea boee boeo boer boet boob booe boor boot bor- bora bore boro borr bort bota botb bote boto bott bova bove bovo brab brae brao brat brav brea breb bree breo brer bret brev broa brob broe broo bror brot brrr btaa btob btor btrt bttb eaba eara earb eare earo eart eata eate eave ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eera eero eeta eete eeva eora eore eota eoto erat erba erbb erbe ereb erer eret erev erob eroe eroo erra erre erro erta erve etat etbr etee eter etoe etra etre etro etta ette etto etvo evae evar evat evea ever evet evoe evoo evra evre o-eo oaer oara oare oate obba obbo obea ober obet oboe obor obot obra obre obro oera oere oeta ooaa ooba oobe ooer oooo oora oore oort ootb orab orae orao orar orat orav orba orbb orbe orbo ore- orea oreb oreo orer oro- oroe oror orot orra orro orta orte orto orve orvr otar otea otee oter oto- otoe otoo otor otov otra otre otro otta otte otto ovar ovee over ovet ovo- ovoo ovot ovra ovre raab raat raba rabb rabe rabo raer raob rara rarb rare raro rata rate rato ratt rava rave rbbb rbbr rea- reae reao rear reat reba rebb rebe rebo reeb reet reev reot rera rere rero rert reta rete reto retr rett reva reve revo roab roar roat rob- roba robb robe robo robt roea roer roet roev roob roor root rora rore roro rort rota rote roto rotr rott rova rove rovo rrat rrrr rtee rtva rtve rver taa- taar taat taba tabb tabe tabo taer taoa taor tara tarb tare taro tarr tart tata tatb tate tato tatr tatt tatv tava tave tavo tbar tbrb tbta tear teat teba tebo teer teet teev teor ter- tera tere tero terr teta tete teto tetr tett teva toab toat toba tobe tobo tobt toea toee toer toet tooa toor toot tora tore toro torr tort torv tota tote toto totr tott tova tove tovo traa trab trae trao trat trav tre- trea tree treo tret trev troa troe troo trot trra trte trtr ttab ttbb tteo tter ttoe tttt tver tvro tvrr tvtv vaar vaat vara vare varr vart vata vate vato vatt vava vear veat veba veer veet veor ver- vera verb vere vero vert veta vete veto vetr veve vevo voar voat voer voet voor voot vor- vora vore voro vort vota vote voto vrav vrba vreo vret vrot vrto vver vvob vvvv

-aaa- -oate -tree aaaee aaata aabaa aabba aabra abaab ababa ababe abaer abara abare abate abava abave abbar abbat abbet abbot abear abeat abeba abebe abeer abeet abera abere aberr abert aboab aboat abobo aboot abora abore abort abote abott above abovo abrar abtaa abtao abtar aeaea aebbe aereo aero-