-er -up b-p b-u bbb bbe bbg bbp bbr bbt bbu be- beb bee beg bep ber bet beu bgb bge bgg bgp bgr bgt bgu bpb bpe bpg bpp bpr bpt bpu brb bre brg brp brr brt bru btb bte btg btp btr btt btu bub bue bug bup bur but buu ebb ebe ebg ebp ebr ebt ebu eeb eee eeg eep eer eet egb ege egg egp egr egt egu ep- epb epe epg epp epr ept epu erb ere erg erp err ert eru etb ete etg etp etr ett etu eu- eub eue eug eup eur eut g-p gbe gbg gbp gbr gbt gbu ge- geb gee geg gep ger get geu ggb ggg ggp ggr ggt ggu gpb gpe gpg gpp gpr gpt gpu grb gre grg grp grr grt gru gtb gte gtg gtp gtr gtt gtu gu- gub gue gug gup gur gut guu p-p pbb pbe pbg pbp pbr pbt pbu peb pee peg pep per pet peu pgb pge pgg pgp pgr pgt ppb ppe ppg ppp ppr ppt ppu prb pre prg prp prr prt pru pt- ptb pte ptg ptp ptr ptt ptu pub pue pug pup pur put puu rbb rbe rbg rbp rbr rbt rbu re- reb ree reg rep rer ret reu rgb rge rgg rgp rgr rgt rpb rpe rpg rpp rpr rpt rpu rrb rrg rrp rrr rrt rru rtb rte rtg rtp rtr rtt rtu rub rue rug rup rur rut ruu tbb tbe tbg tbp tbr tbt tbu te- teb tee teg tep ter tet teu tgb tge tgg tgp tgr tgt tgu tpb tpe tpg tpp tpr tpt tpu trb tre trg trp trr trt tru ttb tte ttg ttp ttr ttt ttu tub tue tug tup tur tut tuu ubb ube ubg ubp ubr ubt ubu ueb uee ueg uep uer uet ugb uge ugg ugp ugr ugt ugu up- upb upe upg upp upr upt upu ur- urb ure urg urp urr urt uru utb ute utp utr utt utu uue uug uur uut uuu

bbbb bbeb bbet bbpr bbrg bebb bebe beeb beeg beep beer beet begg begu bere berg berr bert beru bete bett betu beur breb bree breg brep brer bret brrr brue brug brup brut btbp btrt bttb bubb bube bubu buer bueu buge bugg bur- burb bure burg burp burr burt buru but- bute butt ebbr eber ebru ebur eeee eerg eete eetu egbe egbu egee eger eggb egge eggp egpb egpe egre egte epee eper eppp eprb eprp epte epub erbb erbe ereb erer eret erg- ergg erpe erre ertu erub erur etbr etee eter etre ette ettu euer euge eur- eure eurt gebe geep geer geet gege gegg gepe gerb gere gert geru getb gete getg gett geue geup ggbt gggg gper gpgp gprp grbr greb gree greg grep gret greu grrr grub grue grug grur grut gtbr gubb gubu guep guer gugb guge gugg gugu gurb gure gurg gurr gurt guru gute gutt gutu peep peer peet pegg pegu pepe per- pere perg perp perr pert peru pete petr pett peur peut pger pgpu pgup pper pppp ppru pptt ppur pre- preb pree preg prep pret preu prtp prtr prue prut pruu pter pu-e pube pubu puer puet pueu pugu pupe pupu pur- purb pure purg purp purr puru put- pute putt putu rbbb rbbr rebb rebe rebu reeb reep reet rege regr regt regu repe repp repr rept repu rere rerg rert reru rete retr rett reue reup reut reuu rgbe rgtr rpet rrrr rtee rttp rubb rube rubp rubu ruer ruet ruge rugg rupe rupp rupt rure rurp ruru rute rutt rutu tbrb tbtp tebu teer teet tegg tegt tegu tepe tepp tepu ter- tere terp terr teru tete tetr tett tetu teut tpbg tpeg tper tppp tppr tpte tptp tptr tput tre- tree treg tret treu trge trpe trpg trpp trte trtr trub true trug trut truu ttbb tter tttt tubb tube tubr tubu tuer tuet tugg tugu tupe tupu turb ture turg turp turr turt turu tute tutt tutu u-rp ubbe uber ubet ugep uggt ugur uguu upbe uppe uppp uppu upup urbe ure- uret urge urgu urre urte urup urur urut utep uter uttu utug uuuu

-tree bbbee be-er beber beebe beete beeut begee beget begge begue begur begut beppe beppu berbe bereg beret berge berre berru berte betee beter betre bett- bette beuer beure beute brebu breer breet breg- brege bregg brere brett breu- brrrr bruer bruet bruge brugg brute btr-t bubbe buber buger bugge bugre buret burge burgu burru burte burtt burut buter butte butut ebber ebbet eberg ebert ebure eeeee eepee egger egret epptb epure erbbe erber erege erept erere errtu erte erter ertug erupt etete etree etter eturu eurre gberg gberu gbpee geber gebet gebre gebur geere geert geete geeup gegge gerbe gerre gertt getee geter gette getup grebe greer greet grege gregg grepe grete grett greup greut grgur grrrr grubb grube grure gruut gtube gubbe guber gubru guere gurge gurre gurur gutte p-rep pebre peebu peege peere peert peete pepee peppe pept- pepup perer peret perge perre perte perur petbe peter petr- petre petru pette petur peure pgrep prepg prete prute pter- ptere ptprb ptpre ptprg ptprr ptprt ptpru puber puett puget pupet puppe puree purer purge purre purte puter putre putt- putte puttu putup re-up rebbe rebeg reber rebet rebut reege reepe reere reger reget regge regtt regur regut repeg repet reppe reprt repub reput rere- reree reret retee reter retrg rette reuer reuet reute rubee ruber rubup ruegg ruere ruete ruger ruget rugge rupee ruper ruter rutte ruutu tbtbt tbutt teber tebet teege teepe teeup tegre tegur tepee tepet tepeu teppu teret tereu terge tergu terre tert- teter tetr- tette teuge treer treet treg- trepp trept trere trete trett treut trubu truer trugg trupt trute ttttt tuber tupee turbe turbt turet turre turtu turup turut tutee tutte tuuru uber- ugrug upeet upper upput upter urger urgut urter