bbbb bbeb bblb bcbc bccc bccl bcec bebb bebe bebo beck beeb beek beel beke beko bele belk bell belo beo- beok bleb blee blek bleo blkb blob bloc blok bloo bobb bobe bobo boce bock boco boec boee boel boeo boke boko bole bolk boll bolo boob booc booe book bool c-bo cbbc cbcc cbce cbcl cbec cbee cbkl cbko cblb cblc cbol ccbc cccb cccc cccl ccee ccel cclc ccob ccoc cec- cece ceco ceeb ceec ceel ceke cel- celc cele cell celo ceol ckbc ckbe ckck ckcl ckco ckob ckoc ckoo clec clee clek cleo clob cloe clok cloo cobb cobe cobo coce cock coco coel cok- coke coko col- colb cole colk coll colo coob cook cool e-cl ebbc ebbo ebcc ebel eboe ebol eboo ecbc ecbe eccb eccc ecce eccl ecco ecko eco- ecol eeee eeke eele eeoc ekco ekeb ekek el-b elbe elbo elcb elce elco elec elee elek eleo elke elko elle ello elok eole eolo k-lo kbbb kbbc kbbe kbbk kbbl kbbo kbcb kbce kbck kbcl kbco kbeb kbec kbee kbek kbel kbeo kbkb kbkk kbkl kbko kblb kble kbll kblo kbob kboc kboe kbok kboo kcbc kcbk kcbl kccb kccc kcck kccl kceb kcec kcee kcel kceo kckc kckk kckl kcko kclc kcle kclk kcll kcob kcoe kcol kebb kebc kebe keck keco keek keel kekb kekc keke kekl keko kele kelk kell kelo keok keol kkbb kkbe kkbl kkbo kkcb kkck kkcl kkco kkkk kklb kklc kkll kklo kkob kkol kkoo klbb klbc klbe klbl klcb klcc klce klck klcl kleb klec klee klek kleo klkc klkk klkl klko kllb kllc klle kllk klob kloc kloe klok klol kloo kobb kobc kobe kobk kobo kocb kock koel kokb kokc koke kokk koko kolb kolc kole kolk koll kolo koob kooc kook kool kooo lbcc lcbc lccc lcce lebo lece leck leco leek leel leke lekk leko lele lell lelo leoc leok llcc lllc llll lloc lloo lob- lobb lobe lobo locc loce lock loco loeb loke lokk loko lole loll lolo loob looc looe look lool o-eo obbo obec obel obkb oble oboe obok obol ocbc occc oce ocee ocke oclc oec- oecc oeec oele okko oklo okok okol olbo olcc ole- oleo olle ollo oobe oolo oooo