bbbb bbci bblb bcbc bccc bcci bccl bibb bibi bibl bibo bicc bici bico bili bill bilo bio- bioc bioi biol blic blio blob bloc bloo bobb bobi bobo boco boi- boii boil boli boll bolo boob booc bool c-bo cbbc cbcc cbcl cblb cblc cbol ccbc cccb cccc ccci cccl ccic ccii ccil cclc ccli ccob ccoc cibc cibi cibo cicc cici cico ciii cili cill cilo ciob clib clic clii clio clob cloo cobb cobi cobo coco coil col- colb coli coll colo coob cool icbc iccb iccc icci iccl icco icll icoc iiii iiio iioi iioo ilbc ilic ilio ill- illi illo iloc iloo iobi ioci ioii ioio iolo iooi iooo lbcc lcbc lccc libc libo lico liii lilb lili lill lilo lio- llcc lllc llll lloc lloo lob- lobb lobi lobo locc loci loco loic loli loll lolo loob looc lool obbo oboi obol ocbc occc occi oclc oici oiii olbo olcc olib olic olio olli ollo oobi oolo oooo