-er bbb bbd bbe bbi bbk bbr bbt bdb bdd bde bdi bdk bdr bdt be- beb bed bee bei bek ber bet bi- bib bid bie bii bik bir bit bkb bke bkk bkr bkt brb brd bre bri brk brr brt btb btd bte bti btk btr btt dbb dbd dbe dbi dbk dbr dbt ddb ddd dde ddi ddk ddr ddt de- deb ded dee dei dek der det di- dib did die dii dik dir dit dkb dke dki dkk dkr dkt drb drd dre dri drk drr drt dtb dtd dte dti dtk dtr dtt ebb ebd ebe ebi ebk ebr ebt ed- edb edd ede edi edk edr edt eeb eed eee eek eer eet eib eid eie eii eik eir eit ekb ekd eke eki ekr ekt erb erd ere eri erk err ert etb etd ete eti etk etr ett i-d ibb ibd ibe ibi ibk ibr ibt idb idd ide idi idk idr idt ie- ied iee iei iek ier iet iib iid iie iii iir iit ikb ike iki ikk ikr ikt ir- irb ird ire iri irk irr irt itb itd ite iti itk itt k-t kbb kbd kbe kbi kbk kbr kdb kde kdk kdr kdt ke- keb ked kee kei kek ker ket kib kid kie kii kik kir kit kkb kke kki kkk kkr kkt krd kri krk krr krt ktb kte ktk ktr ktt rbb rbd rbe rbi rbk rbr rbt rdb rdd rde rdi rdr rdt re- reb red ree rei rek rer ret rib rid rie rii rik rir rit rkb rke rkk rkt rrb rrd rri rrk rrr rrt rtb rtd rte rti rtk rtr rtt tbb tbd tbe tbi tbk tbr tbt tdb tdd tde tdi tdk tdr tdt te- teb ted tee tei tek ter tet tib tid tie tii tik tir tit tkb tke tkk tkr tkt trb trd tre tri trk trr trt ttb ttd tte tti ttk ttr ttt

bbbb bbdd bbeb bbet bd-r bdii bebb bebe bebi bede bedi beeb beed beek beer beet beik beir beit beke beki berd bere beri berk berr bert bete beti bett bibb bibe bibi bide bidi bidr bieb bied bier biet bike birb bird bire biri birk birr birt bitd bite bitt brdt breb bred bree brei brek brer bret brid brie brik brit brkb brrr btdt btek btie btrt bttb dbit dbtt dddd ddie ddre debe debi debt dedd dede dedi deeb deed deek deer deet deid deie deir deit dek- deke der- derb dere deri derk derr dete detk detr dibb dibe dide didi dieb died dier diet diii dike diki dird dire dirk dirr dirt dite diti ditt dkid dred dree drei drek dret drib drie drit dted dtek dtki ebbr ebed eber ebid ebit edde eddi ede- edei eder edie edik edit eede eeee eeke eete eid- eide eidi eidr eied eiei eier eike eiki eird eire eitb eiti eitr ekeb eked ekek eker eket ekki erbb erbe erde erdi ereb ered erei erer eret erie erik erit erke erki erre etbr etee eter etik etre ette etti i-be ibed ibet ibid ibie ibrd ibri ibtb idbe ided idee ider idid idie idir idre iedr ieet ieie iere ieri iett iide iied iiie iiii iiit iitr iitt ikee iker ikid ikki ikri irbe ired iree irer iri- irid irie irki irre irri irte irti itbe itek iter itet itie itri k-id kbbb kbbd kbbe kbbi kbbk kbbr kbbt kbdb kbde kbdi kbdr kbeb kbed kbee kbek kber kbet kbib kbid kbie kbik kbit kbkb kbkk kbkr kbrb kbrd kbre kbri kbrk kbrt kbtb kbte kbtk kbtr kbtt kdbb kdbi kdbr kddb kddd kddi kddk kddr kdeb kdei kdet kdkb kdkd kdkk kdkr kdkt kdrb kdri kdtd kdti kdtr kebb kebe kebi kebr kebt kedb kedd kede kedi kedr kedt keed keek keer keet keib keid keii keik keir kekb keke keki ker- kerb kere keri kerk kerr kert ket- ketd kete keti ketk ketr kett kibb kibe kibi kibr kibt kidb kidd kide kidi kidk kidr kier kiid kiii kiik kiit kikd kiki kikk kikr kikt kirb kiri kirk kirr kirt kite kiti kitr kitt kkbb kkbd kkbe kkbi kkbr kkbt kkdd kkdt kked kkid kkik kkit kkkk kkrb kkre kkrk kkrr kkrt kktk krbb krbd krbe krbi krbk krbr krbt krdd krde krdr kreb kred kree krei krek kret krib krid krik krit krkd krke krki krkk krkr krrb krre krri krrk krrr krrt krti krtk krtr ktbb ktbr ktbt ktdb ktdd ktde ktdk ktdr kted ktee ktek ktib ktie ktik ktkb ktke ktkk ktkr ktkt ktrb ktre ktri ktrk ktrr ktrt ktti kttk kttr kttt rbbb rbbr rder rebb rebe rebk redd rede redi redr reeb reed reek reet reid reii reik reir reit reke reki rekt rerd rere reri rert retd rete reti retr rett rib- ribe ridd ride ridi ried riek rier riet rike riki rikk rire riri rite riti ritt rred rrrr rtdt rtee rtei tbit tbrb tddb tdkr tdri tedd tede tedi tedk teed teek teer teet teie teir teke ter- tere teri terk terr tete teti tetr tett tibi tidd tide tie- tied tiee tiei tier tiet tiit tike tiki tirb tird tire tiri tirr tite titi titt tre- tred tree trei trek tret tri- trib trie trik trit trte trtr ttbb tter tttt

-tree b-e-d b-r-k bbbee bd-re be-er bebed bebek beber bebti bedde bedee beder bedet bedid bedri beebe beede beedi beeke beerd beeri beete beibi beide beidi beier beird beire beite beker bekir bekke bekti berbe berde bered berei berek beret berid berie berit berk- berke berre berri berte berti betee beter betid betie betke betre bett- bette betti bibbe biber bibie bibri bidde bided bider bidet bidri biebe bieke bierd biere bieri biert bieti biide biked biker bikie birde birie bited bitek biter bitit bitki bitte bitti bkite bredd brede bredi bredt breed breek breer breet breid breik breit breke brerd brere brett bribe