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