-er -ol bbb bbe bbg bbl bbo bbr bbt be- beb bee beg bel beo ber bet bgb bge bgg bgl bgo bgr bgt blb ble blg bll blo blr blt bob boe bog bol boo bor bot brb bre brg brl bro brr brt btb bte btg btl bto btr btt ebb ebe ebg ebl ebo ebr ebt eeb eee eeg eel eeo eer eet egb ege egg egl ego egr egt elb ele elg ell elo elr elt eo- eob eoe eog eol eoo eor eot erb ere erg erl ero err ert etb ete etg etl eto etr ett gbe gbg gbl gbo gbr gbt ge- geb gee geg gel geo ger get ggb ggg ggo ggr ggt glb gle glg gll glo glr glt gob goe gog gol goo gor got grb gre grg grl gro grr grt gtb gte gtg gtl gto gtr gtt lbb lbe lbg lbl lbo lbr lbt leb lee leg lel leo ler let lgb lge lgg lgl lgo lgr lgt llb lle llg lll llo llr llt lob loe log lol loo lor lot lrb lrg lro lrr lrt ltb lte ltg ltl lto ltr ltt ob- obb obe obg obl obo obr obt oeb oee oeg oel oeo oer oet oge ogg ogl ogo ogt olb ole olg oll olo olt oo- oob oog ool ooo oor oot or- orb ore org orl oro orr ort ot- otb ote otg otl oto otr ott rbb rbe rbg rbl rbo rbr rbt re- reb ree reg rel reo rer ret rgb rge rgg rgo rgr rgt rle rlg rll rlo rlr rlt rob roe rog rol roo ror rot rrb rrg rrl rrr rrt rtb rte rtg rtl rto rtr rtt tbb tbe tbg tbl tbo tbr tbt te- teb tee teg tel teo ter tet tgb tge tgg tgl tgo tgr tgt tle tlg tll tlo tlr tlt to- tob toe tog tol too tor tot trb tre trg trl tro trr trt ttb tte ttg ttl tto ttr ttt

bbbb bbeb bbet bblb bbrg bebb bebe bebo beeb beeg beel beer beet begg bego bele belg bell belo belt beo- beor beot bere berg bero berr bert bete beto bett blbt bleb blee bleg bleo blet blob blog bloo blot blrg bobb bobe bobo boee boel boeo boer boet boge bogg bogo bogt bole bolg boll bolo bolt boob booe boog bool boor boot bor- bore borg boro borr bort botb bote boto bott breb bree breg brel breo brer bret brob broe brog brol broo bror brot brrr btob btor btrt bttb ebbo ebbr ebel eber eboe ebol eboo ebor ebro eeee eele eerg eero eete egbe egee egel eger eggb egge eggo egle ego- egol egor egot egre egte el-b elbe elbo elee eleo eler elet elgg elle ello elog elro elte elto eole eolo eore eorl eoto erbb erbe ereb erel erer eret erg- ergg ergo erle erll erob eroe erol eroo erre erro ertl etbr etee etel eter etoe etre etro ette etto gbbo gebe geel geer geet gege gegg gegl gego gelb gele gelg gell gelo gelt geo- geog geol gerb gere gerl gero gert getb gete getg geto gett ggbt gggg gleb glee gleg gleo glet glge glob glog glor glot glrb glro gobe gobl gobo goel goer gogo gole goll golo golt goog gool goor goot gorb gore gorg goro gorr gort gote gotl goto gott grbr greb gree greg gret grob grog grol groo gror grot grrl grrr gtbr gtoe lbgt lblr lbrt lebo leel leer leet lege legg lego lele lell lelo leog leor lere lero lert lete leto lett lgbt lger lgte llet llll lloo lob- lobb lobe lobo loeb log- logb loge logo lole loll lolo loob looe lool loor loot lore loro lote lotl loto lotr lott lrgb lrrr ltbl ltee ltge lttr o-eo obbo obel ober obet oble oboe obol obor obot obre obro oegb oele oere ogb ogbe ogee ogel oger ogge ogle ogog ogre ogro olbo ole- oleg oleo oler olet olgr olle ollo olog olor olot oobe ooer oolo oooo oore oort ootb orbb orbe orbo ore- oreb oreg orel oreo orer orge orgo orle orlo oro- oroe oror orot orro orte orto otee oter oto- otoe otog otoo otor otre otro otte otto rbbb rbbr rble rebb rebe rebo reeb reel reet rege regl rego regr regt relb rele rell relo relt reog reol reot rere rerg rero rert rete reto retr rett rgbe rgtr rlee rob- robb robe robo robt roeg roel roer roet roge rogg rogo role roll rolo rolt roob roog rool roor root rore roro rort rote rotg rotl roto rotr rott rrle rrrr rtee rtle rtlt tbrb tebo teel teer teet tegg tego tegt tel- tele telg tell telo telt teor ter- tere tero terr tete teto tetr tett tgel tgle tobe tobo tobt toee toer toet toge togo togr togt tol- tole toll tolo tolt tool toor toot tore torg toro torr tort tote toto totr tott tre- tree treg treo tret trge troe trog troo trot trte trtr ttbb tteo tter ttoe tttt

-tree bbbee be-er be-ro bebel beber beblo bebog bebot beebe beele beete begee beget begge begle begob begor begot begto belbo belee beleg belet belge belgo bellb belle bello belot beote berbe bereg berel beret berge berle berlo berob beroe berol beror berre berte berto betee betel beter betle betoo betor betre bett- bette betto bleer bleet blere blete bloor blorb blore blort blote bloto blott bo-bo bobet boble bobr bobre boege boeol boero bogel boger boget bogge bogle bogoe bogor bogot bolbe bolel boleo boler bolet bolge boll- bolle bollo bolte bolto booer boole boore boort borbo boree borel borer boret borge borgo borle boro- boroo borot borre borro botel botet botro botte breel breer breet breg- brege bregg brell brelo breo- brere breto brett brlog brobo broer brole broll brolo brool broto brrrr btr-t ebber ebbet ebble ebell ebelo