-er a-a a-b a-t aaa aab aae aag aan aar aat ab- aba abb abe abg abn abr abt aea aeb aee aeg aen aer aet ag- aga agb age agg agn agr agt an- ana anb ane ang ann anr ant ar- ara arb are arg arn arr art at- ata atb ate atg atn atr att baa bab bae bag ban bar bat bba bbb bbe bbg bbn bbr bbt be- bea beb bee beg ben ber bet bga bgb bge bgg bgn bgr bgt bna bnb bne bng bnn bnr bnt bra brb bre brg brn brr brt bta btb bte btg btn btr btt eaa eab eae eag ean ear eat eba ebb ebe ebg ebn ebr ebt eea eeb eee eeg een eer eet ega egb ege egg egn egr egt en- ena enb ene eng enn enr ent era erb ere erg ern err ert eta etb ete etg etn etr ett gaa gab gae gag gan gar gat gba gbe gbg gbn gbr gbt ge- gea geb gee geg gen ger get gga ggb ggg ggn ggr ggt gna gnb gne gnn gnr gnt gra grb gre grg grn grr grt gta gtb gte gtg gtn gtr gtt naa nab nae nag nan nar nat nba nbb nbe nbg nbn nbr nbt ne- nea neb nee neg nen ner net nga ngb nge ngg ngn ngt nna nnb nne nng nnn nnt nra nrb nre nrg nrn nrr nrt nta ntb nte ntg ntn ntr ntt ra- raa rab rae rag ran rar rat rba rbb rbe rbg rbn rbr rbt re- rea reb ree reg ren rer ret rga rgb rge rgg rgn rgr rgt rna rnb rng rnn rnr rnt rra rrb rrg rrn rrr rrt rta rtb rte rtg rtn rtr rtt taa tab tae tag tan tar tat tba tbb tbe tbg tbn tbr tbt te- tea teb tee teg ten ter tet tga tgb tge tgg tgn tgr tgt tna tnb tne tng tnn tnr tnt tra trb tre trg trn trr trt tta ttb tte ttg ttn ttr ttt

-ana -ane -ene a-be aaaa aaab aaae aaan aaar aaba aabb aabt aaea aaen aage aana aane aang aara aare aart aata aatt abaa abab abae abag aban abar abat abb- abba abbb abbe abbr abbt abee aben aber abet abra abta aean aebn aeer aega aena aent aer- aera aeta aetn aetr aett agag agan agar agat agba agea agee agen ager aget agga agge agna agne agra agre agta agte agtr ana- anaa anab anae anag anan anar anat anba anbb anee aneg anen aner anet ang- anga ange anna annb anne annt ant- anta ante antr antt arab arae arag aran arar arat arba arbe area aree areg aren aret arga argb arge arna arne arng arnt arr- arra arre arrg arrr arrt arta arte artr at-t ataa atab atae atan atar atat atea atee aten ater atna atra atre atrn atta atte attn attr baaa baan baar baat baba babb babe babr baer baga bage bagg bagn bagt bana bane bang bann banr bant bar- bara barb bare barg barn barr bart bata bate batn batt bbbb bbeb bbet bbga bbng bbrg beag bean bear beat beba bebb bebe beeb beeg been beer beet bega begg bena bene beng benn bent bera bere berg bern berr bert beta bete bett bgan bneg bner bnet bnrr bnta brab brae brag bran brat brea breb bree breg bren brer bret brna brrr btaa btan bten btrt bttb eaba eaga eage eana eara earb eare earn eart eata eate eban ebba ebbr eben eber eeea eeee eega eena eeng eent eera eerg eeta eete egaa egae egan egar egat egba egbe egea egee eger eggb egge egna egne egnt egra egre egta egte enab enan enat enb- enbn enbr enea enee eneg ener enga enge engg engr enna enne enra ent- ente entr eran erat erba erbb erbe ereb eren erer eret erg- erga ergg erna erne erra erre erta etag etan etat etbr etee eten eter etna etne etnr etra etre etta ette ettn gaar gaba gabb gabe gabr gabt gaea gaer gaga gage gagg gana gane gang gann gant gara garb gare garg garn garr gart gata gate gatr gatt gbag gban geab gean gear geat geba gebe geen geer geet gege gegg gen- gena gene geng genn gent gera gerb gere gern gert geta getb gete getg gett ggbt gggg ggrn gnaa gnar gnat gnet gnrr grab grae gran grat grbr grea greb gree greg gren gret grrr gtaa gtbr gtea gtta naaa naab naag naan naar naat naba nabe naea naga nage nan- nana nanb nane nang nann nant nara nare narg narn narr nart nata nate natt nbaa nbar nber neab nean near neat neba nebb nebe nebn nebr neea neeb neen neer neet nega nege nena nene neng nent nera nere nerr nert net- neta netb nete nett ngab ngan ngen nger ngtn nngn nnnn nntn nrab nren nrna nrta nter nttr raab raag raan raat raba rabb rabe raeg raen raer raga rage ragg rana rane rang rann rant rara rarb rare rata rate ratt rbbb rbbr rea- reae rean rear reat reba rebb rebe reeb reen reet rega rege regn regr regt rena rene reng renn rent rera rere rerg rert reta rete retr rett rgan rgba rgbe rgtr rnag rnbr rnnt rrat rrna rrrr rtan rtee taa- taag taan taar taat taba tabb tabe taen taer taga tage tagg tana tane tang tann tant tara tarb tare targ tarn tarr tart tata tatb tate tatr tatt tbar tbrb tbta tean tear teat teba teen teer teet tega tegg tegt tena tenb tene teng tenn tent ter- tera tere tern terr teta tete tetr tett tnag tneb tnge traa trab trae trag tran trat tre- trea tree treg tren tret trge trna trng trra trte trtr ttab ttbb tten tter tttt

-aaa- -tree a-get aaaee aaarg aaata aabaa aabba