bbbb bbch bbeb bblb bcbc bccc bccl bcec bche bebb bebe bebo bech beeb beel bele bell belo beo- bhcc bhel bleb blee bleh bleo blob bloc bloo bobb bobe bobo boce boch boco boec boee boel boeo bohl boho bole boll bolo boob booc booe booh bool c-bo cbbc cbcc cbce cbcl cbec cbee cbhl cblb cblc cbol ccbc cccb cccc cccl ccee ccel cche cchl cclc ccob ccoc cec- cece ceco ceeb ceec ceel cehl cel- celc cele cell celo ceol chce chch cheb chec chee cheh chel chlc choc choh chol choo clec clee cleo clob cloe cloo cobb cobe cobh cobo coce coch coco coel coho col- colb cole coll colo coob cooh cool e-cl ebbc ebbo ebcc ebel eboe ebol eboo ecbc ecbe eccb eccc ecce eccl ecco eche echl echo eco- ecol eeee eele eeoc ehcc eheh ehel ehle ehlo el-b elbe elbo elcb elce elch elco elec elee eleh eleo elle ello eole eolo hboc hcbc hccb hccc hcch hebb hebe hebo hech heeb heel hehe heho hele hell helo hhcl hhhh hobe hobo hoce hoch hoel hohe hohl hoho hol- holb holc hole holh holl holo hooe hool lbcc lcbc lccc lcce lchc lebo lece lech leco leel lehe lele lell lelo leoc lhec lhee lhhh llcc lllc llll lloc lloo lob- lobb lobe lobh lobo locc loce loch loco loeb lohe loho lole loll lolo loob looc looe lool o-eo obbo obec obel oble oboe obol ocbc occc oce ocee oche oclc oec- oecc oeec oele ohbe ohcc ohee ohel ohho ohob ohoh olbo olcc ole- oleh oleo olle ollo oobe ooho oolo oooh oooo