bbbb bbeb bbet bbfc bblb bbrc bcbc bccc bccl bcec bcer bcet bcfc bcru bctc bcuc bebb bebe becu beeb beef beel beer beet befe beff beft bele bell belt belu berc bere berr bert beru betc bete bett betu beur bffl bftt blbt blcu bleb blee blet bleu blfc blrc blub blue bluf blur blut brcb brce breb brec bree bref brel brer bret brfc brfu brrr brtc bruc brue brut btcc btcl btec btfc btrc btrt bttb bubb bube bubu bucc buce bucu buel buer bueu bufc bufe buff bufr bulb bule bull bult bulu bur- burb bure burl burr burt buru but- bute butt cbbc cbcc cbce cbcl cbcr cbct cbcu cbec cbee cbef cber cbet cbfb cbfc cblb cblc cbre cbrl cbrt cbtc cbtf cbtl ccbc cccb cccc cccf cccl cccu ccee ccel ccfc ccff ccfl cclc ccrc ccre ccrf ccrl ccrt cctb cctc cctl cctt ccuc ccut cebu 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 cleu cltb cltc club clue clut crbc crbu crcc crce crcr cre- creb crec cree cret creu crfc crfl crlf crrt crtc crtf crtl crub crue crut ctcf ctec ctfc ctle ctrc ctrl cub- cubb cube cucc cuce cuer cufc cuff culb culc cule cull cult curb cure curf curl curr curt cut- cutc cute cutt e-cl ebbc ebbr ebcc ebel eber ebfc ebru ebul ebur ecbc ecbe eccb eccc ecce eccl ecct ecef ecfc ecfr eclt ecrc ecrf ecrl ecrr ecru ect- ectc ectf eeee eefe eefl eele eerc eetc eete eetu efbr efet eft- eftu el-b elbe elbu elcb elce elec elee elef eler elet elfc elfe elft elle ellu elte elue elul erbb erbe ercc erce ereb erec erel erer eret erfc erft erle erll errc erre ertl ertu erub eruc erur etbc etbr etcc etec etee etel eter etfb etfc etfe etre ette ettu eubc euer eufc eule eur- eurc eure eurt fble fccf fece fect feeb feel feer feet fefc fefe feff fele felf fell felt ferb ferc fere ferr fert feru fete fetr fett fetu ffcc ffee ffff ffrr fftf flcl flee fler flet flub flue fluf flur frbc frcc free fret frfc frub frue ft-c ft-l fter ftfc ftlb ftub ftuc fubb fubu fuc- fuct fuel fuet fufc fuff fufu fule full fulu fur- fure furl furr furt fute futu lbcc lblr lbrt lcbc lccc lcce lcer lcfc lcfr lcrl lctl le-u lebu lece lect leef leel leer leet lefe leff left lele lell lelu lerc lere lert lete lett leuc leur lfcc llcc llef llet lleu lllc llll lrfc lrrc lrrr ltbf ltbl ltcc ltee ltfc lttc lttr ltuc lube luce luef luer lufe luff luft lufu lule lull lulu lure lurt lute rbbb rbbr rbcl rble rcbc rccb rccc rcet rcfc rcle rctc rebb rebe rebu recc rece recr rect recu reeb reef reel reet refe reff refl refr reft refu relb rele rell relt rere rert reru rete retr rett reue reuf reul reut reuu rfef rffc rffl rftc rlee rlef rleu rrfc rrle rrrr rtbf rtcc rtce rtee rtfb rtfc rtle rtlt rubb rube rubu ruce ruct ruel ruer ruet rufc rufe ruff ruft rule rull rurc rure ruru rute rutl rutt rutu tbcb tbcc tbce tbrb tccc tccu tcfc tctc tcul tebu tecl tecr tect teec teef teel teer teet tefc teff tefl teft tel- telc tele tell telt telu ter- terc tere terf terr teru tete tetr tett tetu teut tfcu tfeb tfec tftc trcc trcl tre- trec tree tref tret treu trfc trfr trtc trte trtr trub truc true trut truu ttbb tter ttfc ttff tttt ttul tubb tube tubr tubu tucc tuel tuer tuet tufc tufe tuff tuft tufu tule tull tulu turb turc ture turf turr turt turu tute tutl tutt tutu ubbe uber ubet uble ubtf ucbc ucel ucfb ucrc ucut uele uell ufcu ufel ufer uffe ulbc ulcc uleb ulee ulfe ulft ulle ullr ultt ulul urbe ure- uret urfe urff urft urle urre urte urur urut utec utel uter uttu uulu uutf uuuu