-er b-u bbb bbe bbg bbi bbr bbt bbu be- beb bee beg bei ber bet beu bgb bge bgg bgi bgr bgt bgu bi- bib bie big bii bir bit biu brb bre brg bri brr brt bru btb bte btg bti btr btt btu bub bue bug bui bur but buu ebb ebe ebg ebi ebr ebt ebu eeb eee eeg eer eet egb ege egg egi egr egt egu eib eie eig eii eir eit eiu erb ere erg eri err ert eru etb ete etg eti etr ett etu eu- eub eue eug eui eur eut gbe gbg gbi gbr gbt gbu ge- geb gee geg gei ger get geu ggb ggg ggi ggr ggt ggu gib gie gig gii gir git giu grb gre grg gri grr grt gru gtb gte gtg gti gtr gtt gtu gu- gub gue gug gui gur gut guu ibb ibe ibg ibi ibr ibt ibu ie- iee ieg iei ier iet igb ige igg igi igr igt igu iib iie iii iir iit iiu ir- irb ire irg iri irr irt iru itb ite itg iti itt itu iu- iub iue iug iui iur iut rbb rbe rbg rbi rbr rbt rbu re- reb ree reg rei rer ret reu rgb rge rgg rgi rgr rgt rib rie rig rii rir rit rrb rrg rri rrr rrt rru rtb rte rtg rti rtr rtt rtu rub rue rug rui rur rut ruu tbb tbe tbg tbi tbr tbt tbu te- teb tee teg tei ter tet teu tgb tge tgg tgi tgr tgt tgu tib tie tig tii tir tit tiu trb tre trg tri trr trt tru ttb tte ttg tti ttr ttt ttu tub tue tug tui tur tut tuu ubb ube ubg ubi ubr ubt ubu ueb uee ueg uei uer uet ugb uge ugg ugi ugr ugt ugu uib uie uig uii uir uit uiu ur- urb ure urg uri urr urt uru utb ute uti utr utt utu uue uug uur uut uuu

bbbb bbeb bbet bbrg bebb bebe bebi beeb beeg beer beet begg begi begu beir beit bere berg beri berr bert beru bete beti bett betu beur bibb bibe bibi bieb bier biet bieu bigb bige bigg bigt bigu birb bire birg biri birr birt biru bite bitt bitu breb bree breg brei brer bret brie brig brit brrr brue brug brut btie btrt bttb bubb bube bubi bubu buer bueu buge bugg bugi buie buir buit buiu bur- burb bure burg buri burr burt buru but- bute buti butt ebbr eber ebit ebru ebur eeee eerg eete eetu egbe egbu egee eger eggb egge eggi egir egre egri egte eiei eier eige eigg eire eitb eiti eitr erbb erbe ereb erei erer eret erg- ergg ergi erie erit eriu erre ertu erub erur etbr etee eter etre ette etti ettu etui eubi euer euge eur- eure eurt gebe gebi geer geet gege gegg geie geig geir geit gerb gere geri gert geru getb gete getg geti gett geue ggbt gggg gibb gibe gier giet gige gigg gigi gire girg giri girr girt giru gite giue giur grbr greb gree greg gret greu grib grie grig grit grrr grub grue grug grui grur grut gtbr gubb gubi gubu guer gugb guge gugg gugi gugu guib gurb gure gurg guri gurr gurt guru gute guti gutt gutu i-be ibeg ibet ibge ibie ibri ibtb ieet ieie iere ieri iett iger iget igri igue iiie iiii iiit iitr iitt irbe iree irer iri- irie irig irre irri irte irti itbe iter itet itie itri itur iuge iuiu rbbb rbbr rebb rebe rebu reeb reet rege regi regr regt regu reii reir reit reiu rere rerg reri rert reru rete reti retr rett reue reut reuu rgbe rgbi rgit rgtr rib- ribe ribu rier riet rieu rige rigg rigi rigu rire riri rite riti ritt ritu riue rrrr rtee rtei rubb rube rubi rubu ruer ruet ruge rugg rugi ruit rure ruri ruru rute ruti rutt rutu tbit tbrb tebu teer teet tegg tegi tegt tegu teie teir teiu ter- tere teri terr teru tete teti tetr tett tetu teut tibi tibu tie- tiee tiei tier tiet tige tigi tigr tiit tiiu tirb tire tiri tirr tiru tite titi titt titu tre- tree treg trei tret treu trge tri- trib trie trig trit trte trtr trub true trug trut truu ttbb tter tttt tubb tube tubr tubu tuei tuer tuet tugg tugu tuig tuit tuiu turb ture turg turi turr turt turu tute tuti tutt tutu u-ie ubbe ubbi uber ubet ubii ubir ubit ueir uggt ugri ugur uguu uige uirr urbe urbi ure- uret urge urgi urgu urib urie uriu urre urri urte urur urut uter utri utti uttu utug uuri uuuu

-tree bbbee be-er beber bebti beebe beeri beete beeut begee beget begge begti begue begur begut beibi beier beige beire beite berbe bereg berei beret berge bergi berie berig berit beriu berre berri berru berte berti betee beter betie betre bett- bette betti beuer beure beute bibbe biber bibie bibri biebe biere bieri biert bieti big-i bigge bigig birgi birgu birie birur biter bitit bitru bitte bitti biure brebu breer breet breg- brege bregg breit brere brett breu- bribe brieg brier brige brigg brigi brite britt brrrr bruer bruet bruge brugg bruit bruiu bruri brute btr-t bubbe buber buger bugge bugit bugre bugti buire buret burge burgi burgu burie burri burru burte burtt burut buter butit butte butut ebber ebbet ebbie eberg ebert ebibe ebure eeeee eerie eetti egger eggie eggig egret eiger eirie eiter eitri erbbe erber erege erere erier erite eritu errtu erte erter ertug etete etite etree etter ettie eturu eubie eurre gberg gberu gbiti geber gebet gebre gebur geere geert geete gegge geier geige geire geite geitt geiue gerbe gerbi gerre gerri gertt getee geter getit gette getti gibbe gibbi giber gibi- giger gigge gigue giitu girei girru gitie gitig gitit grebe greer greet grege gregg greig