bbbb bbbs bblb bbls bcbc bcbs bccc bccl bccs bcos bcsc bcsl bcss blls blob bloc bloo blss bobb bobo bobs boco bocs boll bolo bols boob booc bool boos bosc boso boss bscs bslc bsos bssc c-bo cbbc cbbs cbcc cbcl cbcs cblb cblc cbol cbsc ccbc cccb cccc cccl cccs cclc ccls ccob ccoc ccsl ccss clob cloo clos clsc cobb cobo cobs coco col- colb coll colo cols coob cool coos cosc cosl coso coss cscb cscc cscl csco cscs csob csos lbcc lbos lbsc lcbc lccc lccs lcls lcsc llbs llcc llcs lllc llll lloc lloo lob- lobb lobo lobs locc loco locs loll lolo lols loob looc lool loos losc loso loss lscb lsco lscs lsso obbo obls obol obos obss ocbc occc oclc ocos olbo olcc ollo olos oolo oooo ooos oscc oscl osco oslo osoo osos ossb osso s-os sbbs sbcc sbcs sccc sccl sccs scl- sclc scls scob scol scoo scsc scsl scso slcc slob sloc sloo slos slsc sobo sobs socl soco socs soll solo sols sool soos soso soss sscc sscs sslc ssoc sssb sssc ssss