bbbb bbci bbeb bblb bbrc bcbc bccc bcci bccl bcec bcer bcie bebb bebe bebi beci beeb beel beer beic beil beir bele beli bell berc bere beri berr bibb bibe bibi bibl bicc bice bici bieb biel bier bile bili bill birb bire biri birl birr bleb blee blei blic blir blrc brcb brce breb brec bree brei brel brer bric brie bril brrr cbbc cbcc cbce cbcl cbcr cbec cbee cber cbir cblb cblc cbre cbrl ccbc cccb cccc ccci cccl ccee ccel ccic ccii ccil ccir cclc ccli ccrc ccre ccri ccrl cec- cece ceci ceeb ceec ceel ceil cel- celc cele celi cell cer- cerc cere ceri cerl cibc cibe cibi cicc cici cicr ciee ciel cier ciii cili cill cirb circ cire ciri cirl cirr clec clee clei cler clib clic clii clir clri crbc crcc crce crcr cre- creb crec cree crei crib cric crie e-cl ebbc ebbr ebcc ebel eber ebic ebli ecbc ecbe eccb eccc ecce ecci eccl ecib ecil ecrc ecri ecrl ecrr eeee eele eerc eiec eiei eier eile eire el-b elbe elbi elcb elce elec elee eler elic elie elil elle elli erbb erbe ercc erce ereb erec erei erel erer eric erie eril erle erli erll errc erre i-be ibec ibie ible ibrc ibri icbc iccb iccc icci iccl iccr icec icee icel icer icle icll iclr icrc icre icrr iecc ieie iele iere ieri iiie iiii iirc ilbc ilce ile- ilec iler ilic ilie ilir ill- ille illi ilre irbe ircc iree irel irer iri- iric irie iril irlb irrc irre irri lbcc lblr lcbc lccc lcce lcer lcrl lece leel leer leib leic leie leil leir lele leli lell lerc lere libc libe libr lice licr lieb liel lier liii liir lilb lile lili lill lirc lire liri lirl lirr llcc lllc llll lric lrrc lrrr rbbb rbbr rbcl rble rcbc rccb rccc rcic rcle rebb rebe recc rece reci recr reeb reel reii reil reir relb rele rell rere reri rib- ribe ricc rice riel rier rile rill rire riri rlee rrle rrrr