-er bbb bbe bbi bbk bbr bbt be- beb bee bei bek ber bet bez bi- bib bie bii bik bir bit biz bkb bke bkk bkr bkt brb bre bri brk brr brt brz btb bte bti btk btr btt btz bze bzr bzz ebb ebe ebi ebk ebr ebt eeb eee eek eer eet eib eie eii eik eir eit ekb eke eki ekr ekt erb ere eri erk err ert erz etb ete eti etk etr ett etz eze ezr ezz ibb ibe ibi ibk ibr ibt ibz ie- iee iei iek ier iet iib iie iii iir iit ikb ike iki ikk ikr ikt ir- irb ire iri irk irr irt itb ite iti itk itt itz ize izi izz k-t k-z kbb kbe kbi kbk kbr kbz ke- keb kee kei kek ker ket kez kib kie kii kik kir kit kiz kkb kke kki kkk kkr kkt kri krk krr krt ktb kte ktk ktr ktt rbb rbe rbi rbk rbr rbt re- reb ree rei rek rer ret rez rib rie rii rik rir rit riz rkb rke rkk rkt rkz rrb rri rrk rrr rrt rtb rte rti rtk rtr rtt rtz rzb rze tbb tbe tbi tbk tbr tbt tbz te- teb tee tei tek ter tet tez tib tie tii tik tir tit tiz tkb tke tkk tkr tkt tkz trb tre tri trk trr trt trz ttb tte tti ttk ttr ttt tze zbb zbr zbt zeb zee zek zer zet zez zib zie zik zir zit ziz zte ztr zzr zzt zzz

bbbb bbeb bbet bebb bebe bebi beeb beek beer beet beik beir beit beke beki bere beri berk berr bert bete beti bett betz beze bezi bibb bibe bibi bieb bier biet bike birb bire biri birk birr birt bite bitt bitz bize bizz breb bree brei brek brer bret brez brie brik brit briz brkb brrr btek btie btrt bttb bzer bzie bzrk bzzt bzzz ebbr eber ebit eeee eeke eete eeze eiei eier eike eiki eire eitb eiti eitr ekeb ekek eker eket ekki erbb erbe ereb erei erer eret erez erie erik erit eriz erke erki erre ertz erzi etbr etee eter etik etre ette etti ezek ezer ezri i-be ibet ibie ibri ibtb ieet ieie iere ieri iett iiie iiii iiit iitr iitt ikee iker ikki ikri irbe iree irer iri- irie irki irre irri irte irti itbe itek iter itet itie itri izet izki izze kbbb kbbe kbbi kbbk kbbr kbbt kbbz kbeb kbee kbek kber kbet kbez kbib kbie kbik kbit kbiz kbkb kbkk kbkr kbkz kbrb kbre kbri kbrk kbrt kbrz kbtb kbte kbtk kbtr kbtt kbtz kbze kbzi kbzt kbzz kebb kebe kebi kebr kebt keek keer keet keib keii keik keir kekb keke keki ker- kerb kere keri kerk kerr kert kerz ket- kete keti ketk ketr kett kezb keze kezi kezr kezz kibb kibe kibi kibr kibt kibz kier kiez kiii kiik kiit kiki kikk kikr kikt kikz kirb kiri kirk kirr kirt kite kiti kitr kitt kitz kizz kkbb kkbe kkbi kkbr kkbt kkbz kkez kkik kkit kkkk kkrb kkre kkrk kkrr kkrt kkrz kktk kktz kkzz krbb krbe krbi krbk krbr krbt krbz kreb kree krei krek kret krez krib krik krit kriz krke krki krkk krkr krkz krrb krre krri krrk krrr krrt krrz krti krtk krtr krtz krze krzi krzk krzr krzz ktbb ktbr ktbt ktbz ktee ktek ktez ktib ktie ktik ktkb ktke ktkk ktkr ktkt ktkz ktrb ktre ktri ktrk ktrr ktrt ktrz ktti kttk kttr kttt kttz ktzk ktzr ktzt ktzz kzbb kzbe kzbi kzbk kzbr kzbt kzbz kzee kzer kziz kzke kzkr kzkz kzrb kzrk kzrr kzrz kztb kzti kztk kzzb kzzi kzzk kzzr kzzt kzzz rbbb rbbr rebb rebe rebk reeb reek reet reii reik reir reit reiz reke reki rekt rere reri rert rete reti retr rett retz reze rezi rib- ribe riek rier riet riez rike riki rikk rire riri rite riti ritt ritz rize rizi rizk rizz rrrr rtee rtei tbit tbrb teek teer teet teez teie teir teke ter- tere teri terk terr tete teti tetr tett tetz tezz tibi tie- tiee tiei tier tiet tiit tike tiki tirb tire tiri tirr tite titi titt titz tizi tizz tre- tree trei trek tret trez tri- trib trie trik trit triz trte trtr ttbb tter tttt tzzt zbek zber zbik zebe zeek zeir zeit zeke zeki zekr zeri zerk zert zete zeze zike ziki zikr ziri ziti zizi zizz zrze zzzz

-tree b-r-k bbbee be-er bebek beber bebti beebe beeke beeri beete beez beibi beier beire beite beitz beizi beker bekir bekke bekti berbe berei berek beret berie berit beriz berk- berke berre berri berte berti berze betee beter betie betke betre bett- bette betti bezer bibbe biber bibie bibri biebe bieke biere bieri biert bieti biker bikie birie bitek biter bitez bitit bitki bitte bitti bitzi bizet bizzi bkite breek breer breet breik breit breiz breke brere brett bretz breze brezi bribe brier brike brite britt britz brize brizz brrrr btr-t bzeit bzzzt ebber ebbet ebbie ebert ebibe ebike eeeee eerie eerik eetti eiker eirie eiter eitri eizie ekbir ekker erbbe erber erere eretz erier erite erkki erte erter eteke etete etike etite etree etrek etter ettie i-bet i-rtk ibert ibeti ibrik iebet ieiri ierei iette iezer iiiee iiiii iitti ikbke ikire irbit irete iriki irite irker irrit itbit itete itezi itire itter ittre ittti itzer izier izzet k-t-b kebbe kebek keber kebir keere keeri keiki keire keiri keitt kekri kerei kerek keret kerie kerik kerre kerri ketek keter ketib kette ketti keziz kibbe kibbi kibei kibet kibi- kieke kierz kiiki kikki kirie kirke kirki kirre kitee kiter kitir kitki kitte kitti kizer kreek kreiz kreke kreki krete kretz kribi kriek krier krike kriti krize rebbe reber rebet rebit reere reeti reetz reeze reiek reike reiki reitz rekke rere- reree reret rerez rerik rerir retee reter retie retki rette rezek ribbi riber ribet