-er bbb bbe bbg bbm bbn bbr bbt be- beb bee beg bem ben ber bet bgb bge bgg bgm bgn bgr bgt bmb bme bmg bmm bmn bmr bmt bnb bne bng bnn bnr bnt brb bre brg brm brn brr brt btb bte btg btm btn btr btt ebb ebe ebg ebm ebn ebr ebt eeb eee eeg eem een eer eet egb ege egg egm egn egr egt em- emb eme emg emm emn emr emt en- enb ene eng enm enn enr ent erb ere erg erm ern err ert etb ete etg etm etn etr ett gbe gbg gbm gbn gbr gbt ge- geb gee geg gem gen ger get ggb ggg ggm ggn ggr ggt gmb gme gmg gmm gmn gmr gmt gnb gne gnm gnn gnr gnt grb gre grg grm grn grr grt gtb gte gtg gtm gtn gtr gtt m-r mbb mbe mbg mbm mbr mbt meb mee meg mem men mer met mgb mge mgm mgn mgr mgt mmb mme mmg mmm mmn mmr mmt mnb mne mng mnm mnn mnr mnt mrb mre mrg mrm mrn mrr mrt mtb mte mtg mtm mtn mtr mtt nbb nbe nbg nbm nbn nbr nbt ne- neb nee neg nem nen ner net ngb nge ngg ngm ngn ngt nmb nme nmg nmm nmn nmr nmt nnb nne nng nnm nnn nnt nrb nre nrg nrm nrn nrr nrt ntb nte ntg ntm ntn ntr ntt rbb rbe rbg rbm rbn rbr rbt re- reb ree reg rem ren rer ret rgb rge rgg rgn rgr rgt rmb rme rmg rmm rmn rmr rmt rnb rng rnm rnn rnr rnt rrb rrg rrm rrn rrr rrt rtb rte rtg rtm rtn rtr rtt tbb tbe tbg tbm tbn tbr tbt te- teb tee teg tem ten ter tet tgb tge tgg tgm tgn tgr tgt tmb tme tmg tmm tmn tmr tmt tnb tne tng tnm tnn tnr tnt trb tre trg trm trn trr trt ttb tte ttg ttm ttn ttr ttt

-ene bbbb bbeb bbet bbgm bbmg bbng bbrg bebb bebe beeb beeg beem been beer beet begg beme bene beng benn bent bere berg berm bern berr bert bete bett bneg bner bnet bnrr bntm breb bree breg brem bren brer bret brrm brrr bten btrt bttb ebbr eben eber eeee eeng eent eerg eete egbe egee egem eger eggb egge egne egnt egre egte embe embr emen emer emet emme emne emre emte enb- enbn enbr enee eneg enem ener enge engg engr enne ent- ente entr erbb erbe ereb erem eren erer eret erg- ergg erme erne erre etbr etee etem eten eter etne etnr etre etrm ette ettn gebe geen geer geet gege gegg gem- gemm gemr gen- gene geng genn gent gerb gere germ gern gert getb gete getg gett ggbt gggg ggrn gmen gmer gmme gmmr gnet gnmt gnrr grbr greb gree greg grem gren gret grmt grrr gtbr mebe meem meen meer meet meg- mege megg megr meme memr men- mene meng menn ment mer- merb mere merm mern mert met- mete mett mgen mger mgmt mgrm mmen mmgn mmmm mnbb mnem mnet mngr mntb mntn mrbb mrbm mreb mree mreg mren mrgn mrng mrtm mrtn mrtt mtge mtnt mtre mtrr mttr nber nebb nebe nebn nebr neeb neem neen neer neet nege nem- neme nemn nene neng nent nere nerm nerr nert net- netb nete nett ngen nger ngmn ngtn nm-e nmeg nmnt nmtb nngn nnmt nnnn nntn nrem nren nter nttm nttr rbbb rbbr rebb rebe reeb reem reen reet rege regm regn regr regt reme remn rene reng renn rent rere rerg rert rete retr rett rgbe rgtr rmrg rnbr rnnt rrrr rtee tbrb teem teen teer teet tegg tegt teme tenb tene teng tenn tent ter- tere term tern terr tete tetr tett tmbg tmbr tmen tmge tmnt tmtt tneb tnge tre- tree treg trem tren tret trge trmb trng trte trtr ttbb tten tter tttt

-tree bbbee be-er beber beebe beene beete begee begem beget begge bembe bemer bemet bene- benet benge benne berbe bereg beren beret berge berme berne bernt berre berte betee beten beter betne betre bett- bette breem breen breer breet breg- brege bregg breme bremm brene breng brenn brent brere brett brmmm brrrr btr-t e-ten ebber ebbet ebene eberg ebern ebert ebner eeeee eener eenet eeten egene eggen egger eggng egner egrem egret embee ember emeer emere emerg emert emmen emmer emmet emnem emtee enent enete engem engen enger enmer ennet enrge enten enter entre erbbe erben erber ereen erege erem- erere ergen ernen ernet erte erter etern etete etnre etree etten etter g-men gberg geben geber gebet gebre geere geert geete gegge gemen gemer gemme gemre gener genet genge genmr genre gente gerbe geren germe gerre gertt getee getem geten geter getme gette grebe green greer greet grege gregg greme grene greng grenn grent grete grett grgen grrrr m-net mbebe mbege mbere mbret mebbe meene meeng meere meete megen meger megne megre membe memer menem menen mener menet menge menne mente mereg merer meret merge merre merte meteg meten meter metr- metre metrn mette mmmmm mnem- mneme mrmet mt-te mt-tg mt-tm mt-tn mt-tr mt-tt mtgee mtree neber nebet neeme neere negeb neger negre nembe nemen nenem nente neree neret nerre nerte neten netne nette ngege nnebe ntete rebbe rebeg reber rebet reege reeme reene reere regem regen reger reget regge regme regne regtt remee remen remer remet renee reneg rener renet renge rengg renne rente rere- reree reret retee retem reter retnr retrg rette rmngt rmnmn rngtt rnmnt rtenn t-men tbtbt teber tebet teege teeme tegen tegre tembe temne tenen tener tenet tenge tenne tente terem teret terge terme terne terre tert- teten teter tetr- tette tgttm tntnt treen treer treet treg- treme trene trent trere trete trett ttnet ttttt

b-tree bbbbbb beebee beebem beegee beembe beemen beemer beenge beerme beerne beeter beggen begger begnet bemeet bement bemete benben beneme benete benett benger