bbbb bbci bbeb bbfc bblb bcbc bccc bcci bccl bcec bcfc bcie bcuc bebb bebe bebi beci becu beeb beef beel befe beff beic beil bele beli bell belu bffl bibb bibe bibi bibl bicc bice bici bieb bief biel bieu biff bifi bile bili bill bilu blcu bleb blee blei bleu blfc blic blub blue bluf bubb bube bubi bubu bucc buce buci bucu buel bueu bufc bufe buff buic buie buif buiu bulb bule buli bull bulu cbbc cbcc cbce cbcl cbcu cbec cbee cbef cbfb cbfc cblb cblc ccbc cccb cccc cccf ccci cccl cccu ccee ccel ccfc ccff ccfi ccfl ccic ccii ccil cclc ccli ccuc cebu cec- cece ceci ceeb ceec ceel cef- cefc ceil cel- celc cele celf celi cell ceui cfbc cfcb cfcf cfcl cffb cibc cibe cibi cicc cici cicu ciee ciel cife ciff cifl ciii cili cill ciuc clec clee clef clei cleu clib clic clif clii club clue cub- cubb cube cubi cucc cuce cuci cufc cuff cufi cui- cuif cuil culb culc cule cull e-cl ebbc ebcc ebel ebfc ebic ebli ebul ecbc ecbe eccb eccc ecce ecci eccl ecef ecfc ecib ecil eeee eefe eefl eele effi efic efil eiec eiei eile el-b elbe elbi elbu elcb elce elec elee elef elfc elfe elfi elic elie elif elil elle elli ellu elue elui elul eubc eubi eufc eufi eule fble fccf fcic fcii fece feeb feel fefc fefe feff fefi feie feil fele felf feli fell ffcc ffee ffff ffii fibe ficc fice fiec fief fiel fifc fife fiff fifi fiii fiil file fili fill flcl flee flic flii flub flue fluf fubb fubu fuc- fuci fuel fufc fuff fufu fuil fule fuli full fulu i-be ibec ibfi ibie ible icbc iccb iccc iccf icci iccl iccu icec icee icef icel icfb icle icll icub icue iecc ieie iele ifbb ifel ific ifil iiie iiii iiuc ilbc ilce ile- ilec ilic ilie ill- ille illi iucc iuce iuef iuel iuiu lbcc lcbc lccc lcce lcfc le-u lebu lece leef leel lefe leff leib leic leie leif leil lele leli lell lelu leuc lfcc libc libe libu lice lieb lief liel lieu life liff lifl liii lilb lile lili lill lilu liue liuf llcc llef lleu lllc llll lube luce luci luef lufe luff lufu luif lule luli lull lulu u-ie ubbe ubbi ubic ubii uble ubli ucbc ucci ucel ucfb ucil uele ueli uell ufcu ufel uffe uile ulbc ulcc uleb ulee ulfe ulic ulie ulle ulli ulul uulu uuuu