-er a-a a-b a-t aaa aab aae aao aar aat aax ab- aba abb abe abo abr abt abx aea aeb aee aeo aer aet aex aoa aob aoe aoo aor aot aox ar- ara arb are aro arr art arx at- ata atb ate ato atr att atx ax- axa axe axo axr axt axx baa bab bae bao bar bat bax bba bbb bbe bbo bbr bbt bbx be- bea beb bee beo ber bet bex boa bob boe boo bor bot box bra brb bre bro brr brt brx bta btb bte bto btr btt btx bxb bxo bxx eaa eab eae eao ear eat eax eba ebb ebe ebo ebr ebt ebx eea eeb eee eeo eer eet eex eo- eoa eob eoe eoo eor eot era erb ere ero err ert eta etb ete eto etr ett etx ex- exa exe exo exr ext exx oaa oab oae oao oar oat oax ob- oba obb obe obo obr obt obx oea oeb oee oeo oer oet oex oo- ooa oob ooo oor oot oox or- ora orb ore oro orr ort orx ot- ota otb ote oto otr ott ox- oxa oxb oxo oxt oxx ra- raa rab rae rao rar rat rax rba rbb rbe rbo rbr rbt rbx re- rea reb ree reo rer ret rex roa rob roe roo ror rot rox rra rrb rrr rrt rta rtb rte rto rtr rtt rtx rxr t-x taa tab tae tao tar tat tax tba tbb tbe tbo tbr tbt te- tea teb tee teo ter tet tex to- toa tob toe too tor tot tox tra trb tre tro trr trt trx tta ttb tte tto ttr ttt ttx txe txt xaa xar xat xbe xbr xbx xee xer xet xex xoa xoo xor xot xox xrt xrx xtr xtx xxo xxx

a-be aaaa aaab aaae aaar aaba aabb aabt aaea aaoe aaoo aara aare aaro aart aata aatt abaa abab abae abar abat abax abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abox abra abro abta aeer aer- aera aero aeta aeto aetr aett aetx aoba aora aorb aort arab arae arar arat arax arba arbe area aree areo aret arex aroa arob aroe aroo aror arr- arra arre arro arrr arrt arta arte arto artr artx at-t at-x ataa atab atae atar atat atax atea atee ateo ater atex atob atoe ator atot atra atre atro atrx atta atte atto attr axar axat axer axo- axoa axto axxo ba-x baaa baar baat baba babb babe babo babr baer bar- bara barb bare baro barr bart barx bata bate bato batt baxt bbbb bbeb bbet bbox bear beat beba bebb bebe bebo beeb beer beet beo- beor beot bera bere bero berr bert beta bete beto bett boab boar boat boba bobb bobe bobo boea boee boeo boer boet boob booe boor boot boox bor- bora bore boro borr bort bota botb bote boto bott boxa brab brae brao brat brax brea breb bree breo brer bret brex broa brob broe broo bror brot brox brrr btaa btex btob btor btrt bttb eaba eara earb eare earo eart eata eate ebba ebbo ebbr eber eboe eboo ebor ebox ebro eeea eeee eera eero eeta eete eext eora eore eota eoto er-x erat erba erbb erbe ereb erer eret erob eroe eroo erra erre erro erta etat etbr etee eter etoe etox etra etre etro etta ette etto exa- exer exo- exor exrx exta exte extr o-eo oaer oara oare oate obba obbo obea ober obet obex oboe obor obot obox obra obre obro oeax oera oere oeta ooaa ooba oobe ooer oooo oora oore oort ootb orab orae orao orar orat orba orbb orbe orbo ore- orea oreb oreo orer orex oro- oroe oror orot orra orro orta orte orto otar otea otee oter oto- otoe otoo otor otra otre otro otta otte otto oxa- oxea oxer oxo- oxox oxxo raab raat raba rabb rabe rabo raer raob rara rarb rare raro rata rate rato ratt raxa rbbb rbbr rea- reae reao rear reat reba rebb rebe rebo reeb reet reot rera rere rero rert reta rete reto retr rett rexx roab roar roat rob- roba robb robe robo robt roea roer roet roob roor root roox rora rore roro rort rota rote roto rotr rott roxa roxo rrat rrrr rtee rtex taa- taar taat taba tabb tabe tabo taer taoa taor tara tarb tare taro tarr tart tata tatb tate tato tatr tatt tax- taxa taxe taxo taxt tbar tbox tbrb tbta tear teat teba tebo teer teet teor ter- tera tere tero terr teta tete teto tetr tett tetx texa text toab toat toba tobe tobo tobt toea toee toer toet tooa toor toot tora tore toro torr tort torx tota tote toto totr tott tox- toxa toxo toxt traa trab trae trao trat trax tre- trea tree treo tret trex troa troe troo trot trox trra trte trtr ttab ttbb tteo tter ttoe tttt txaa txtr xaar xara xare xate xbar xbee xbox xbra xeer xer- xera xero xert xexe xoro xote xoxo xtar xtea xtra xtro xxxo xxxx

-aaa- -oate -tree a-box aaaee aaata aabaa aabba aabra aatxe abaab ababa ababe abaer abara abare abate abbar abbat abbet abbot abear abeat abeba abebe abeer abeet abera abere aberr abert aboab aboat abobo aboot abora abore abort abote abott abrar abtaa abtao abtar aeaea aebbe aereo aero- aeroe aetat aeter aeto- aort- aorta aorte aotea ar-ab araat arab- araba arabe arabo araea arara arare arata arate araxa arbab arbar arbat arbee arber arbet arbor arbot arbre areae arear areat areet areo- arere arero arete areto arett arexx aroab aroar aroba arobe aroer aroor aroot arora arore arrea arret arroe art-x artar artat artax artea arter artex arto- artoo artot atara ataxx atbar atbat atear ateat ater- aterr atete ateto atoot atora atoto atrab atrax atree atrex atro- atroa atrot atrox attar attea