deie deir deit dek- deke der- derb derc dere derg deri derk derr dete detk detr dgeg dgge dgkb dgkd dgkg dibb dibe dice dici dick dict dide didi dieb died dier diet dige digg digi diii dike diki dird dire dirk dirr dirt dite diti ditt dkdc dkid drbc dred dree dreg drei drek dret drge drib dric drie drit dtcc dted dtek dtki ebbc ebbr ebcc ebed eber ebic ebid ebit ecbc ecbe eccb eccc ecce ecci ecct ecdc eced ecib ecig ecit ecrc ecri ecrr ect- ectc eddc edde eddi ede- edei eder edge edie edik edit eede eeee eeke eerc eerg eetc eete egbe egcc egcg egcr egec egee eger eggb egge eggi egir egre egri egte egtk eick eid- eide eidi eidr eiec eied eiei eier eige eigg eike eiki eird eire eitb eitc eiti eitr ekeb eked ekek eker eket ekki erbb erbe ercc erce erde erdi ereb erec ered erei erer eret erg- ergg ergi eric erie erik erit erke erki errc erre etbc etbr etcc etec etee eter etic etik etre ette etti gbde gc-c gcbc gccc gcet gcic gcii gcrg gctc gdci gddb gdrc gdrt gebe gebi gece geck gedd gede gedi geed geek geer geet gege gegg geic geie geig geir geit geki gerb gerd gere geri gert getb gete getg geti getk gett ggbt gggg gibb gibe gick gicr gidc gidd gide gidi gied gier giet gige gigg gigi gird gire girg giri girk girr girt gite grbr grcc grce grdc greb grec gree greg gret grib gric grid grie grig grit grrr grtc gtbr gtcr i-be ibec ibed ibeg ibet ibge ibid ibie ibrc ibrd ibri ibtb ibtc icbc icbd iccb iccc icci iccr icct icdc icdd icde icec iced icee icer icet icgc icke icrc icre icrr icrt idbe idce idcr idec ided idee ider idic idid idie idig idir idrc idre iecc iedr ieet ieie iere ieri iett igbc igcc iger iget igkc igri iicd iide iied iiie iiii iiit iirc iitr iitt ikee iker ikid ikig ikki ikri irbe ircc ircd ircg irdc ired iree irer iri- iric irid irie irig irki irrc irre irri irte irti itbe itec itek iter itet itgc itic itie itri k-ci k-id kbbb kbbc kbbd kbbe kbbg kbbi kbbk kbbr kbbt kbcb kbce kbci kbck kbcr kbct kbdb kbde kbdg kbdi kbdr kbeb kbec kbed kbee kbek kber kbet kbgb kbge kbgg kbgr kbgt kbib kbic kbid kbie kbig kbik kbit kbkb kbkg kbkk kbkr kbrb kbrc kbrd kbre kbrg kbri kbrk kbrt kbtb kbtc kbte kbtk kbtr kbtt kcbc kcbd kcbi kcbk kcbr kccb kccc kccd kcci kcck kccr kcct kcdc kcdd kcdi kcdr kceb kcec kced kcee kceg kcei kcet kcgc kcgi kcgr kcic kcid kcie kcii kcir kcit kckc kckk kckr kcrc kcrg kcri kcrr kcrt kctb kctc kcte kcti kdbb kdbg kdbi kdbr kdcc kdcd kdce kdcr kddb kddc kddd kddg kddi kddk kddr kdeb kdec kdei kdet kdge kdic kdkb kdkd kdkk kdkr kdkt kdrb kdri kdtd kdti kdtr kebb kebc kebe kebi kebr kebt kecg keck kecr kedb kedc kedd kede kedg kedi kedr kedt keed keek keer keet kege kegg kegi kegk kegr keib keid keig keii keik keir kekb kekc keke keki ker- kerb kerc kere keri kerk kerr kert ket- ketc ketd kete keti ketk ketr kett kgbb kgbc kgbr kgbt kgcb kgcc kgcd kgce kgcr kgdb kgdc kgdd kgeb kgec kged kget kggg kggi kggr kgir kgrb kgrc kgrd kgre kgrg kgri kgrk kgrr kgrt kgtk kibb kibc kibe kibg kibi kibr kibt kicb kicc kicd kice kicg kick kicr kict kidb kidd kide kidg kidi kidk kidr kier kigc kiic kiid kiii kiik kiit kikc kikd kiki kikk kikr kikt kirb kirc kiri kirk kirr kirt kitc kite kitg kiti kitr kitt kkbb kkbd kkbe kkbg kkbi kkbr kkbt kkcb kkcd kkci kkck kkcr kkct kkdc kkdd kkdg kkdt kked kkeg kkgb kkgr kkic kkid kkik kkit kkkk kkrb kkrc kkre kkrk kkrr kkrt kktc kktk krbb krbd krbe krbg krbi krbk krbr krbt krcb krcc krcd krce krcg krci krdc krdd krde krdg krdr kreb krec kred kree krei krek kret krgi krgt krib krid krik krit krkc krkd krke krki krkk krkr krrb krrc krre krrg krri krrk krrr krrt krtc krti krtk krtr ktbb ktbc ktbg ktbr ktbt ktcc ktce ktck ktcr ktdb ktdc ktdd ktde ktdk ktdr ktec kted ktee kteg ktek ktge ktgg ktgr ktib ktic ktie ktig ktik ktkb ktkc ktke ktkk ktkr ktkt ktrb ktrc ktre ktrg ktri ktrk ktrr ktrt kttc kttg ktti kttk kttr kttt rbbb rbbr rcbc rccb rccc rcdc rcde rcet rcgc rcic rcid rcrd rcrg rctc rctg rcti rder rebb rebe rebk recc recd rece reci reck recr rect redc redd rede redi redr reeb reed reek reet regd rege regi regr regt reid reii reik reir reit reke reki rekt rerd rere rerg reri rert retd rete reti retr rett rgbe rgbi rgit rgtr rib- ribe ricc rice rick rict ridc ridd ride ridi ried riek rier riet rige rigg rigi rike riki rikk rire riri rite riti ritt rred rrrr rtcc rtce rtcg rtdt rtee rtei rtkg tbcb tbcc tbcd tbce tbit tbrb tccc tcdd tctc tddb tdkr tdri teck tecr tect tedd tede tedi tedk teec teed teek teer teet tegg tegi tegt teic teie teir teke ter- terc tere teri terk terr tete teti tetr tett tgcc tgtc tibi ticc tice tick tidc tidd tide tie- tied tiee tiei tier tiet tige tigi tigr tiit tike tiki tirb tird tire tiri tirr titc tite titi titt tkkg trcc tre- trec tred tree treg trei trek tret trge tri- trib tric trie trig trik trit trtc trte trtr ttbb tter ttkg tttt

-tree b-e-d b-r-k bbbee bcced bckdk bd-re be-er bebed bebek beber bebic bebti becic becke becki bedde bedee beder bedet bedid bedri beebe beede beedi beeke beerd beeri beete begee beget begge begic begti beibi beice beide beidi beier beige beird