bbbb bbbs bblb bbls bcbc bcbs bccc bccl bccs bcos bcsc bcsl bcss blkb blls blob bloc blok bloo blss bobb bobo bobs bock boco bocs boko boks bolk boll bolo bols boob booc book bool boos bosc bosk boso boss bscs bslc bsos bssc c-bo cbbc cbbs cbcc cbcl cbcs cbkl cbko cblb cblc cbol cbsc ccbc cccb cccc cccl cccs cclc ccls ccob ccoc ccsl ccss ckbc ckck ckcl ckco ckcs ckob ckoc ckoo ckos cksb cksl ckso clob clok cloo clos clsc cobb cobo cobs cock coco cok- coko col- colb colk coll colo cols coob cook cool coos cosc cosl coso coss cscb cscc cscl csco cscs csks csob csos k-lo k-os kbbb kbbc kbbk kbbl kbbo kbbs kbcb kbck kbcl kbco kbcs kbkb kbkk kbkl kbko kblb kbll kblo kbls kbob kboc kbok kboo kbos kbsb kbsk kbso kbss kcbc kcbk kcbl kcbs kccb kccc kcck kccl kckc kckk kckl kcko kclc kclk kcll kcls kcob kcol kcos kcsb kcsc kcss kkbb kkbl kkbo kkbs kkcb kkck kkcl kkco kkcs kkkk kklb kklc kkll kklo kkls kkob kkol kkoo kkss klbb klbc klbl klbs klcb klcc klck klcl klcs klkc klkk klkl klko klks kllb kllc kllk klls klob kloc klok klol kloo klos klsc kobb kobc kobk kobo kobs kocb kock kocs kokb kokc kokk koko koks kolb kolc kolk koll kolo kols koob kooc kook kool kooo koos kos- kosb kosc koso koss ksbc ksbl ksbs kscb ksck kscl ksco kscs kskb kskk ksko ksks kslb kslc kslk ksll kslo ksob ksoc ksok ksol ksoo ksos kssl ksso ksss lbcc lbos lbsc lcbc lccc lccs lcls lcsc llbs llcc llcs llks lllc llll lloc lloo lob- lobb lobo lobs locc lock loco locs lokk loko loll lolo lols loob looc look lool loos losc loso loss lscb lsco lscs lsso obbo obkb obls obok obol obos obss ocbc occc ocks oclc ocos okko oklo okok okol okso olbo olcc ollo olos oolo oooo ooos oscc oscl osco oslo osoo osos ossb osso s-os sbbs sbcc sbcs sccc sccl sccs sck- sckl scl- sclc sclk scls scob scok scol scoo scsc scsl scso skol skss slcc slob sloc sloo slos slsc sobo sobs sock socl soco socs sokk soko solk soll solo sols sook sool soos soso soss sscc sscs sslc ssoc sssb sssc ssss