-er -ey bbb bbe bbk bbr bbs bbt bby be- beb bee bek ber bes bet bey bkb bke bkk bkr bks bkt brb bre brk brr brs brt bry bsb bse bsk bsr bss bst bsy btb bte btk btr bts btt bty by- bye byk byr bys byt ebb ebe ebk ebr ebs ebt eby eeb eee eek eer ees eet eey ekb eke ekr eks ekt eky erb ere erk err ers ert ery es- esb ese esk esr ess est esy etb ete etk etr ets ett ety eye eyr eys eyt k-t kbb kbe kbk kbr kbs ke- keb kee kek ker kes ket key kkb kke kkk kkr kks kkt kky krk krr krs krt kry ksb kse ksk ksr kss kst ktb kte ktk ktr kts ktt kye kyr kys kyt rbb rbe rbk rbr rbs rbt re- reb ree rek rer res ret rey rkb rke rkk rks rkt rky rrb rrk rrr rrs rrt rsb rse rsk rsr rss rst rtb rte rtk rtr rts rtt rty ry- rye ryk ryr rys ryy sbb sbe sbk sbr sbs sbt sby se- seb see sek ser ses set sey sk- skb ske skk skr sks skt sky sr- srb sre srk srr srs srt sry ss- ssb sse ssk ssr sss sst stb ste stk str sts stt sty sy- syb sye syk syr sys syt tbb tbe tbk tbr tbs tbt te- teb tee tek ter tes tet tey tkb tke tkk tkr tks tkt tky trb tre trk trr trs trt try tsb tse tsk tsr tss tst tsy ttb tte ttk ttr tts ttt tty tye tyr tys tyt ybe ybr ybs yby yeb yee yek yer yes yet yey ykk yre yrs yrt ysb yse ysk ysr yss yst ysy yte ytk ytr yts ytt yyb yye yys yyt yyy

bbbb bbbs bbeb bbet bebb bebe beby beeb beek beer bees beet beey beke beks bere berk berr bers bert bery bes- bese besk bess best besy bete bets bett beye beyk beys beyt bkry breb bree brek brer bres bret brey brkb brrr brrs brsb brsr brst bry- brye bryk bseb bsee bser bses bset bskt bsse bsts btek btrt btry btss bttb byer byes byke byre byrk byrt bysb byse byss byst bysy byte byts ebbr ebbs ebby eber ebes eeby eeee eees eeke eeks eers eery eese eesk eesy eete eets ekeb ekek eker ekes eket erbb erbe ereb erer eres eret erke erks erre errs erse erst erts erye esbs esee esek eser eses eset eske esks esky esse esst essy este estr ests esty etbr etee eter etes etre etsy ette etty eyeb eyer eyes eyet eyey eyke eyre eyry eyse eyst eyte eyyr kbbb kbbe kbbk kbbr kbbs kbbt kbeb kbee kbek kber kbes kbet kbey kbkb kbkk kbkr kbky kbrb kbre kbrk kbrt kbry kbsb kbsk kbsr kbss kbst kbsy kbtb kbte kbtk kbtr kbts kbtt kbyb kbyr kbys kebb kebe kebr kebt keek keer kees keet kekb keke keks ker- kerb kere kerk kerr kers kert kesb kesk kesr kess kest kesy ket- kete ketk ketr kets kett kety keyb keye keys keyy kkbb kkbe kkbr kkbs kkbt kkkk kkrb kkre kkrk kkrr kkrs kkrt kkse kksr kkss kkst kktk kkts kkty kkys kkyy krbb krbe krbk krbr krbt kreb kree krek kres kret krke krkk krkr krks krky krrb krre krrk krrr krrs krrt krry krse krsk krsr krss krst krsy krtk krtr krts krty krye kryk kryy ksbr ksbs ksby ksee ksek kser kset ksey kskb kske kskk kskr ksks ksky ksrb ksrr ksrs ksrt ksry ksse kssr ksss ksst kstb kste kstk kstr ksts kstt ksty ksyr ksyy ktbb ktbr ktbt ktby ktee ktek ktkb ktke ktkk ktkr ktks ktkt ktrb ktre ktrk ktrr ktrs ktrt ktry ktsr ktst ktsy kttk kttr ktts kttt ktty ktyr kybb kybe kybr kyby kyee kyes kyet kyke kykk kykr kyks kyky kyre kyrk kyrs kyse kysk kysr kyst kyte kyts kytt kyty kyyk kyys kyyt kyyy rbbb rbbr rbbs rbss rbst rebb rebe rebk rebs reeb reek rees reet reke reks rekt reky rere rers rert rery rese ress rest rete retr rets rett rety reye reyk reys rkss rkts rrrr rsee rsre rsts rtee rtes rtss rtts rybe ryeb ryes ryet ryke rysy rytt ryyt sbbs sber sbrk sbse sbst sbtk se-e se-k se-s se-t se-y sebe sebs sebt seby seeb seek seer sees seet seey seke sekk sekt serb sere serk serr sers sert sery sese sess sest set- sete sets sett seye seyk seys seyt skee sker skes sket skey skrt skss sky- skye skyr skys skyy srby sreb sres srtr ssbr ssby ssee sses sset ssrs sssb ssss sstb ssts stbs stee stek ster stes stet stey stks stre strk strs stry stss sttr stye styk styr stys syer syes syke syre syrs syrt syry syse syss syst syte sytt syyk tbbs tbrb tbst teek teer tees teet teke ter- tere terk terr ters tery tese tess test tete tetr tets tett teye teyk teyr teys tkey tkts tre- tree trek tres tret trey trst trte trtr try- tryb trye trys tses tset tsey tsks tsse tssr tsst tsts tsys ttbb tter ttss tttt ttys tyee tyek tyer tyes tyet tyke tyr- tyre tyrr tyse tyss tyst tyte tytt tyty ybbs yber ybet ybry yeek yeer yees yeet yeke yerb yere yerk yerr yers yert yery yesk yess yest yete yets yett yeye yeyr ykes ykey ykyt yrke ysby ysee yser yses yset ysse ysyb ytky ytre yyyy

-tree b-r-k bbbee bbser be-er bebek beber bebes beebe beebs beeby beeke beers beery beest beete beets beety beker bekes bekke berbe berek beres beret berey berk- berke berks berre berry berse berte berts berty besee beset besey besse bessy beste bests besys betee beter betes betke betre betrs betsy bett- bette betts betty betyb betys beyer beyke beyre beyte breek breer brees breet breke brere brers brery