-er a-a a-b a-t aaa aab aae aag aao aar aat ab- aba abb abe abg abo abr abt aea aeb aee aeg aeo aer aet ag- aga agb age agg ago agr agt aoa aob aoe aog aoo aor aot ar- ara arb are arg aro arr art at- ata atb ate atg ato atr att baa bab bae bag bao bar bat bba bbb bbe bbg bbo bbr bbt be- bea beb bee beg beo ber bet bga bgb bge bgg bgo bgr bgt boa bob boe bog boo bor bot bra brb bre brg bro brr brt bta btb bte btg bto btr btt eaa eab eae eag eao ear eat eba ebb ebe ebg ebo ebr ebt eea eeb eee eeg eeo eer eet ega egb ege egg ego egr egt eo- eoa eob eoe eog eoo eor eot era erb ere erg ero err ert eta etb ete etg eto etr ett gaa gab gae gag gao gar gat gba gbe gbg gbo gbr gbt ge- gea geb gee geg geo ger get gga ggb ggg ggo ggr ggt goa gob goe gog goo gor got gra grb gre grg gro grr grt gta gtb gte gtg gto gtr gtt oaa oab oae oag oao oar oat ob- oba obb obe obg obo obr obt oea oeb oee oeg oeo oer oet oga oge ogg ogo ogt oo- ooa oob oog ooo oor oot or- ora orb ore org oro orr ort ot- ota otb ote otg oto otr ott ra- raa rab rae rag rao rar rat rba rbb rbe rbg rbo rbr rbt re- rea reb ree reg reo rer ret rga rgb rge rgg rgo rgr rgt roa rob roe rog roo ror rot rra rrb rrg rrr rrt rta rtb rte rtg rto rtr rtt taa tab tae tag tao tar tat tba tbb tbe tbg tbo tbr tbt te- tea teb tee teg teo ter tet tga tgb tge tgg tgo tgr tgt to- toa tob toe tog too tor tot tra trb tre trg tro trr trt tta ttb tte ttg tto ttr ttt

a-be aaaa aaab aaae aaar aaba aabb aabt aaea aage aaoe aaoo aara aare aaro aart aata aatt abaa abab abae abag abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abra abro abta aeer aega aer- aera aero aeta aeto aetr aett ag-o agag agao agar agat agba agbo agea agee ager aget agga agge agob agog agoo agot agra agre agro agta agte agtr aoba aora aorb aort arab arae arag arar arat arba arbe area aree areg areo aret arga argb arge argo aroa arob aroe aroo aror arr- arra arre arrg arro arrr arrt arta arte arto artr at-t ataa atab atae atar atat atea atee ateo ater atgo atob atoe ator atot atra atre atro atta atte atto attr baaa baar baat baba babb babe babo babr baer baga bage bagg bago bagt bar- bara barb bare barg baro barr bart bata bate bato batt bbbb bbeb bbet bbga bbrg beag bear beat beba bebb bebe bebo beeb beeg beer beet bega begg bego beo- beor beot bera bere berg bero berr bert beta bete beto bett boab boag boar boat boba bobb bobe bobo boea boee boeo boer boet boga boge bogg bogo bogt boob booe boog boor boot bor- bora bore borg boro borr bort bota botb bote boto bott brab brae brag brao brat brea breb bree breg breo brer bret broa brob broe brog broo bror brot brrr btaa btob btor btrt bttb eaba eaga eage eara earb eare earo eart eata eate ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eega eera eerg eero eeta eete egaa egae egao egar egat egba egbe egea egee eger eggb egge eggo ego- egor egot egra egre egta egte eora eore eota eoto erat erba erbb erbe ereb erer eret erg- erga ergg ergo erob eroe eroo erra erre erro erta etag etat etbr etee eter etoe etra etre etro etta ette etto gaar gaba gabb gabe gabo gabr gabt gaea gaer gaga gage gagg gago gara garb gare garg garo garr gart gata gate gato gatr gatt gbag gbbo geab gear geat geba gebe geer geet gege gegg gego geo- geog gera gerb gere gero gert geta getb gete getg geto gett ggbt gggg goar goat goba gobe gobo goer goga gogo goog goor goot gora gorb gore gorg goro gorr gort gota gote goto gott grab grae grat grbr grea greb gree greg gret grob grog groo gror grot grrr gtaa gtbr gtea gtoe gtta o-eo oaer oara oare oate obba obbo obea ober obet oboe obor obot obra obre obro oegb oera oere oeta ogae ogar ogb ogba ogbe ogea ogee oger ogge ogoa ogog ogra ogre ogro ooaa ooba oobe ooer oooo oora oore oort ootb orab orae orao orar orat orba orbb orbe orbo ore- orea oreb oreg oreo orer orga orge orgo oro- oroe oror orot orra orro orta orte orto otar otea otee oter oto- otoe otog otoo otor otra otre otro otta otte otto raab raag raat raba rabb rabe rabo raeg raer raga rage ragg rago raob rara rarb rare raro rata rate rato ratt rbbb rbbr rea- reae reao rear reat reba rebb rebe rebo reeb reet rega rege rego regr regt reog reot rera rere rerg rero rert reta rete reto retr rett rgba rgbe rgtr roab roag roar roat rob- roba robb robe robo robt roea roeg roer roet roga roge rogg rogo roob roog roor root rora rore roro rort rota rote rotg roto rotr rott rrat rrrr rtee taa- taag taar taat taba tabb tabe tabo taer taga tage tagg tago taoa taor tara tarb tare targ taro tarr tart tata tatb tate tato tatr tatt tbar tbrb tbta tear teat teba tebo teer teet tega tegg tego tegt teor ter- tera tere tero