-er bbb bbe bbg bbi bbk bbr bbt be- beb bee beg bei bek ber bet bgb bge bgg bgi bgk bgr bgt bi- bib bie big bii bik bir bit bkb bke bkg bkk bkr bkt brb bre brg bri brk brr brt btb bte btg bti btk btr btt ebb ebe ebg ebi ebk ebr ebt eeb eee eeg eek eer eet egb ege egg egi egr egt eib eie eig eii eik eir eit ekb eke ekg eki ekr ekt erb ere erg eri erk err ert etb ete etg eti etk etr ett gbe gbg gbi gbk gbr gbt ge- geb gee geg gei gek ger get ggb ggg ggi ggr ggt gib gie gig gii gik gir git gkb gkt grb gre grg gri grk grr grt gtb gte gtg gti gtk gtr gtt ibb ibe ibg ibi ibk ibr ibt ie- iee ieg iei iek ier iet igb ige igg igi igk igr igt iib iie iii iir iit ikb ike iki ikk ikr ikt ir- irb ire irg iri irk irr irt itb ite itg iti itk itt k-t kbb kbe kbi kbk kbr ke- keb kee keg kei kek ker ket kgb kgi kib kie kig kii kik kir kit kkb kke kki kkk kkr kkt krg kri krk krr krt ktb kte ktg ktk ktr ktt rbb rbe rbg rbi rbk rbr rbt re- reb ree reg rei rek rer ret rgb rge rgg rgi rgk rgr rgt rib rie rig rii rik rir rit rkb rke rkg rkk rkt rrb rrg rri rrk rrr rrt rtb rte rtg rti rtk rtr rtt tbb tbe tbg tbi tbk tbr tbt te- teb tee teg tei tek ter tet tgb tge tgg tgi tgk tgr tgt tib tie tig tii tik tir tit tkb tke tkg tkk tkr tkt trb tre trg tri trk trr trt ttb tte ttg tti ttk ttr ttt

bbbb bbeb bbet bbrg bebb bebe bebi beeb beeg beek beer beet begg begi beik beir beit beke beki bere berg beri berk berr bert bete beti bett bibb bibe bibi bieb bier biet bigb bige bigg bigt bike birb bire birg biri birk birr birt bite bitt breb bree breg brei brek brer bret brie brig brik brit brkb brrr btek btie btrt bttb ebbr eber ebit eeee eeke eerg eete egbe egee eger eggb egge eggi egir egre egri egte egtk eiei eier eige eigg eike eiki eire eitb eiti eitr ekeb ekek eker eket ekki erbb erbe ereb erei erer eret erg- ergg ergi erie erik erit erke erki erre etbr etee eter etik etre ette etti gebe gebi geek geer geet gege gegg geie geig geir geit geki gerb gere geri gert getb gete getg geti getk gett ggbt gggg gibb gibe gier giet gige gigg gigi gire girg giri girk girr girt gite grbr greb gree greg gret grib grie grig grit grrr gtbr i-be ibeg ibet ibge ibie ibri ibtb ieet ieie iere ieri iett iger iget igri iiie iiii iiit iitr iitt ikee iker ikig ikki ikri irbe iree irer iri- irie irig irki irre irri irte irti itbe itek iter itet itie itri kbbb kbbe kbbg kbbi kbbk kbbr kbbt kbeb kbee kbek kber kbet kbgb kbge kbgg kbgr kbgt kbib kbie kbig kbik kbit kbkb kbkg kbkk kbkr kbrb kbre kbrg kbri kbrk kbrt kbtb kbte kbtk kbtr kbtt kebb kebe kebi kebr kebt keek keer keet kege kegg kegi kegk kegr keib keig keii keik keir kekb keke keki ker- kerb kere keri kerk kerr kert ket- kete keti ketk ketr kett kgbb kgbr kgbt kgeb kget kggg kggi kggr kgir kgrb kgre kgrg kgri kgrk kgrr kgrt kgtk kibb kibe kibg kibi kibr kibt kier kiii kiik kiit kiki kikk kikr kikt kirb kiri kirk kirr kirt kite kitg kiti kitr kitt kkbb kkbe kkbg kkbi kkbr kkbt kkeg kkgb kkgr kkik kkit kkkk kkrb kkre kkrk kkrr kkrt kktk krbb krbe krbg krbi krbk krbr krbt kreb kree krei krek kret krgi krgt krib krik krit krke krki krkk krkr krrb krre krrg krri krrk krrr krrt krti krtk krtr ktbb ktbg ktbr ktbt ktee kteg ktek ktge ktgg ktgr ktib ktie ktig ktik ktkb ktke ktkk ktkr ktkt ktrb ktre ktrg ktri ktrk ktrr ktrt kttg ktti kttk kttr kttt rbbb rbbr rebb rebe rebk reeb reek reet rege regi regr regt reii reik reir reit reke reki rekt rere rerg reri rert rete reti retr rett rgbe rgbi rgit rgtr rib- ribe riek rier riet rige rigg rigi rike riki rikk rire riri rite riti ritt rrrr rtee rtei rtkg tbit tbrb teek teer teet tegg tegi tegt teie teir teke ter- tere teri terk terr tete teti tetr tett tibi tie- tiee tiei tier tiet tige tigi tigr tiit tike tiki tirb tire tiri tirr tite titi titt tkkg tre- tree treg trei trek tret trge tri- trib trie trig trik trit trte trtr ttbb tter ttkg tttt

-tree b-r-k bbbee be-er bebek beber bebti beebe beeke beeri beete begee beget begge begti beibi beier beige beire beite beker bekir bekke bekti berbe bereg berei berek beret berge bergi berie berig berit berk- berke berre berri berte berti betee beter betie betke betre bett- bette betti bibbe biber bibie bibri biebe bieke biere bieri biert bieti big-i bigge bigig biker bikie birgi birie bitek biter bitit bitki bitte bitti bkite breek breer breet breg- brege bregg breik breit breke brere brett bribe brieg brier brige brigg brigi brike brite britt brrrr btr-t ebber ebbet ebbie eberg ebert ebibe ebike eeeee eerie eerik eetti egger eggie eggig egrek egret eiger eiker eirie eiter eitri ekbir ekker erbbe erber erege erere erier erite erkki erte erter eteke etete etike etite etree etrek etter ettie gbeke gberg gbiti geber gebet gebke gebre geere geert geete gegge geier geige geire geite geitt gerbe gerbi gerik gerke gerre gerri gertt getee geter getik getit gette getti gibbe gibbi giber