-er bbb bbc bbe bbf bbl bbr bbt bcb bcc bce bcf bcl bcr bct be- beb bec bee bef bel ber bet bfb bfc bfe bff bfl bfr bft blb blc ble blf bll blr blt brb bre brf brl brr brt btb btc bte btf btl btr btt c-- cbb cbc cbe cbf cbl cbr cbt ccb ccc cce ccf ccl ccr cct ce- ceb cec cee cef cel cer cet cfb cfc cfe cff cfl cfr cft cl- clb clc cle clf cll clr clt crb crc cre crf crl crr crt ctb ctc cte ctf ctl ctr ctt ebb ebc ebe ebf ebl ebr ebt ec- ecb ecc ece ecf ecl ecr ect eeb eec eee eef eel eer eet ef- efb efc efe eff efl efr eft elb elc ele elf ell elr elt erb erc ere erf erl err ert etb etc ete etf etl etr ett fbb fbc fbe fbf fbl fbr fbt fcb fcc fce fcf fcl fcr fct feb fec fee fef fel fer fet ffc ffe fff ffl ffr fft flb flc fle flf fll flr flt frb frc fre frf frl frr frt ftb ftc fte ftf ftl ftr ftt lbb lbc lbe lbf lbl lbr lbt lcb lcc lce lcf lcl lcr lct leb lec lee lef lel ler let lfb lfc lfe lff lfl lfr lft llb llc lle llf lll llr llt lrb lrc lrf lrr lrt ltb ltc lte ltf ltl ltr ltt rbb rbc rbe rbf rbl rbr rbt rcb rcc rce rcf rcl rcr rct re- reb rec ree ref rel rer ret rfb rfc rfe rff rfl rfr rft rlc rle rlf rll rlr rlt rrb rrc rrf rrl rrr rrt rtb rtc rte rtf rtl rtr rtt tbb tbc tbe tbf tbl tbr tbt tcb tcc tce tcf tcl tcr tct te- teb tec tee tef tel ter tet tfb tfc tfe tff tfl tfr tft tlc tle tlf tll tlr tlt trb trc tre trf trl trr trt ttb ttc tte ttf ttl ttr ttt

bbbb bbeb bbet bbfc bblb bbrc bcbc bccc bccl bcec bcer bcet bcfc bctc bebb bebe beeb beef beel beer beet befe beff beft bele bell belt berc bere berr bert betc bete bett bffl bftt blbt bleb blee blet blfc blrc brcb brce breb brec bree bref brel brer bret brfc brrr brtc btcc btcl btec btfc btrc btrt bttb cbbc cbcc cbce cbcl cbcr cbct cbec cbee cbef cber cbet cbfb cbfc cblb cblc cbre cbrl cbrt cbtc cbtf cbtl ccbc cccb cccc cccf cccl ccee ccel ccfc ccff ccfl cclc ccrc ccre ccrf ccrl ccrt cctb cctc cctl cctt cec- cece cect ceeb ceec ceel cef- cefc cel- celc cele celf cell celt cer- cerc cere cerf cerl cert cet- cete cfbc cfbr cfbt cfcb cfcf cfcl cffb cffr cfrb cfre cfrt cftc cfte cftl cftr clec clee clef cler clet cltb cltc crbc crcc crce crcr cre- creb crec cree cret crfc crfl crlf crrt crtc crtf crtl ctcf ctec ctfc ctle ctrc ctrl e-cl ebbc ebbr ebcc ebel eber ebfc ecbc ecbe eccb eccc ecce eccl ecct ecef ecfc ecfr eclt ecrc ecrf ecrl ecrr ect- ectc ectf eeee eefe eefl eele eerc eetc eete efbr efet eft- el-b elbe elcb elce elec elee elef eler elet elfc elfe elft elle elte erbb erbe ercc erce ereb erec erel erer eret erfc erft erle erll errc erre ertl etbc etbr etcc etec etee etel eter etfb etfc etfe etre ette fble fccf fece fect feeb feel feer feet fefc fefe feff fele felf fell felt ferb ferc fere ferr fert fete fetr fett ffcc ffee ffff ffrr fftf flcl flee fler flet frbc frcc free fret frfc ft-c ft-l fter ftfc ftlb lbcc lblr lbrt lcbc lccc lcce lcer lcfc lcfr lcrl lctl lece lect leef leel leer leet lefe leff left lele lell lerc lere lert lete lett lfcc llcc llef llet lllc llll lrfc lrrc lrrr ltbf ltbl ltcc ltee ltfc lttc lttr rbbb rbbr rbcl rble rcbc rccb rccc rcet rcfc rcle rctc rebb rebe recc rece recr rect reeb reef reel reet refe reff refl refr reft relb rele rell relt rere rert rete retr rett rfef rffc rffl rftc rlee rlef rrfc rrle rrrr rtbf rtcc rtce rtee rtfb rtfc rtle rtlt tbcb tbcc tbce tbrb tccc tcfc tctc tecl tecr tect teec teef teel teer teet tefc teff tefl teft tel- telc tele tell telt ter- terc tere terf terr tete tetr tett tfeb tfec tftc trcc trcl tre- trec tree tref tret trfc trfr trtc trte trtr ttbb tter ttfc ttff tttt

-tree bbbee bcell be-er bebel beber becel beebe beeft beele beete beffe belce belec belee belef belet bellb belle berbe berec berel beret berle berre berte betee betel beter betle betre bett- bette bleer bleet bleft blere blete brece breef breel breer breet brell brere brett brrrr btc-e btr-t c-tec cbeff cbeft ccccc ccell ccett cclef ccrcl ccrel cctrl cebec ceber ceele ceere celeb celer cell- celle celte cerc- cerce cerec cerer ceret cerre certe cette cfler clcff cleef cleer cleet clefe cleft clerc clere clete clett crebe crece creel creer creft crele crell crete crrel ctcfl ctree ctrlc cttee ebber ebbet ebble ebell eberl ebert eccle ectfe eeeee eeler efere efetf effer effet eftel efter elect eleet elele ellel eller ellet elrec erbbe erber erect erere erte ertel erter etete etree ettel etter ettle fclef febel feble febre feele feere felce felet felle felte feltt ferce ferel feret ferle ferr- ferre ferte fetel feter fette flect fleer fleet flere flert flete flett freel freer freet frere frett ft-lb ftlee ftrtt lebce lebec lebel leber lebet lecce leece leell leere leert leffe leftb lelle lerer letbe letre lette rebbe rebec rebel reber rebet recce recet rect- recte reece reefe reeft reere refel refer refet reffe relee relet relte rere- reree reret retee retel reter rette tbtbt tcell teber tebet tectb teele