-er -th bbb bbe bbh bbn bbr bbt be- beb bee beh ben ber bet bev bhb bhe bhh bhj bhr bht bhv bjj bjn bjr bjt bnb bne bnj bnn bnr bnt bnv brb bre brh brj brn brr brt brv btb bte bth btn btr btt btv bvb bve bvh bvn bvr bvt bvv ebb ebe ebh ebj ebn ebr ebt ebv eeb eee een eer eet eev ehb ehe ehh ehn ehr eht ehv ejt en- enb ene enh enn enr ent env erb ere erh ern err ert erv etb ete eth etj etn etr ett etv evb eve evh evn evr evt evv hbb hbe hbh hbj hbn hbr hbt hbv he- heb hee heh hej hen her het hev hhb hhe hhh hhj hhn hhr hht hhv hjn hjr hjt hjv hnb hne hnh hnj hnn hnt hnv hr- hrb hre hrh hrj hrn hrr hrt hrv htb hte hth htj htn htr htt htv hv- hvb hvj hvn hvr hvt hvv jbj jbr jbt jeb jee jeh jej jen jer jet jhe jhj jhn jhr jht jjb jjj jjr jne jnh jnj jnn jnr jnt jrb jrn jrr jrt jtb jte jth jtn jtr jtt jtv jvb jvn jvt nbb nbe nbn nbr nbt nbv ne- neb nee neh nej nen ner net nev nhb nhe nhh nhj nhn nhr nht nhv nje njn nnb nne nnh nnn nnt nnv nrb nre nrj nrn nrr nrt nrv ntb nte nth ntn ntr ntt ntv nvb nve nvh nvn nvt nvv rbb rbe rbh rbn rbr rbt re- reb ree reh ren rer ret rev rh- rhb rhe rhh rhn rhr rht rhv rjr rnb rnh rnn rnr rnt rnv rrb rrh rrn rrr rrt rtb rte rtj rtn rtr rtt rtv rvb rve rvh rvn rvr rvt rvv tbb tbe tbh tbj tbn tbr tbt tbv te- teb tee teh tej ten ter tet tev th- thb the thh thn thr tht thv tje tjr tnb tne tnh tnn tnr tnt trb tre trh trn trr trt trv ttb tte tth ttn ttr ttt ttv tvb tve tvh tvn tvr tvt v-e vbh vbr vbv veb vee veh ven ver vet vh- vhb vhe vht vn- vnj vnr vnv vrb vre vrh vrn vrr vrt vtb vte vtr vtt vtv vvb vvr vvt vvv

-ene bbbb bbeb bbet bebb bebe beeb beej been beer beet behn behr bene benj benn bent bere bern berr bert bete beth bett betv bher bhet bhrt bner bnet bnrr breb bree bren brer bret brev brje brnj brrr bten btrt bttb ebbr eben eber eeee eent eete eeth eevn eheh ehen eher ehre ehte ehvj ejer en-v enb- enbn enbr enee ener enne ent- ente entj entr erbb erbe ereb eren erer eret erev erne erre erth erve etbr etee eten eter eth- ethe ethn etne etnr etre ette ettn even ever evet evje evre hebb hebe hebr heeb heer heet hehe hehn hene henh henj henn hent herb here hern herr hert hete heth hett heve hevn hevt hhhh hntb hntr hree hrtb hrte hrtv hten htet httr hvtr jbtv jebb jebe jeer jeet jene jent jere jert jetb jete jeth jetn jett jhvh jner jnet jrbr jtrh n-tv nbbj nber nebb nebe nebn nebr neeb neen neer neet neev nehe nene nenh nent nere nerr nert nerv net- netb nete neth nett netv neve nheb nhnn njtv nnnn nntn nnvt nren nter nthn ntht nttr nttv nvtv rbbb rbbr rebb rebe reeb reen reet reev rehb rehe rehn reht rene renn rent rere rert rete reth retr rett reve rheb rhee rhen rhet rjtv rnbr rnnt rrrr rtee rtve rver rvvh tbrb teej teen teer teet teev tehr tejn tenb tene tenn tent ter- tere terj tern terr tete teth tetr tett the- theb thee then ther thet thnt thre thtb thtr tneb tre- tree tren tret trev trte trtr ttbb tten tter tttt tvbn tver tvhb tvnb tvrr tvtv veen veer veet veht ven- vene venn vent ver- verb vere vern vert vete veth vetr veve vhhh vret vrhe vrnn vten vver vvvv

-tree bbbee be-er beber beebe beene beete beeth beeve behen beher behet bejte bene- benet benne berbe bereh beren beret berhe berne bernt berre berte berth betee beten beter bethe betne betre bett- bette bever bheen bheer bhev breen breer breet brene brenn brent brere breth brett breve brrrr btr-t e-ten ebber ebbet ebene ebern ebert ebneh ebner eeeee eener eenet eeten eevee eever ehnen ehren ehret ejbeh enent enete enhet ennet enten enter enthe entre enver erbbe erben erber ereen erere ereve ernen ernet erte erter erthe erven etern etete ethen ether ethn- etnre etree etten etter even- evene event evere everr evert evete evett eveve evren h-e-b h-net he-he hebbe hebe- heben heber heene heere heern heete hehte henen henne hente heren herne herre herte herth herve heter hethe hette heven hever hheth hhhhh hrere hthrt htree jebet jenne jereh jerre jerrv jerte jetee jeter jette jever n-jet neber nebet neere neeve neheb neher neneh nente neree neret nerre nerte nerv- nerve neten nethe netne nette nettv neven never nevet nevre nevve nnebe nteje ntete rebbe reber rebet reene reere reerh reeth reeve reher rehet renee rener renet renne rente rere- reree reret retee reter rethe retje retnr rette reven rever revet rheen rhene rhett rhnet rtejr rtenn rtrev t-v-h tbtbt teber tebet teeth tehee tejen tenen tener tenet tenne tente tenth teret terje terne terre tert- terve teten teter tethe tetr- tette tevet thebe theeb theer thene ther- there thern thete theth theve thre- three thret tntnt treen treer treet trene trent trere trete trett treve trnje ttnet ttttt veber vebre veere veeve vejen venee vener venet venev venne vente vereb veren verje verne verre verte verve veten vette vever vrben vrbje vrhje

b-tree bbbbbb beebee beerne beeter beever behete behter bejjeh benben benete benett benner bennet bentee benter berbee berber bereet berene berere berhet berner bernet berrer