bbbb bbdd bbdo bblb bcbc bccc bccl bdbc bddc bldc blkb blkd blob bloc blod blok bloo bobb bobo bock boco bodb bodo boko bold bolk boll bolo boob booc bood book bool c-bo c-cd cbbc cbcc cbcl cbdb cbdc cbdo cbkl cbko cblb cblc cbol ccbc cccb cccc cccl ccdc cclc ccob ccoc ccod cddb cddl ckbc ckck ckcl ckco ckdo ckob ckoc ckoo clcd cldc clob clod clok cloo cobb cobo cock coco codd codl cok- coko col- colb cold colk coll colo coob cood cook cool d-bo dbcc dcbc dccb dccc dccl dcdb dddd ddlc ddoc dkdc dlbd dlco dobb dobl dock doco dod- dodd dodo doko dold dolk doll dolo doob dood dook dool k-lo kbbb kbbc kbbd kbbk kbbl kbbo kbcb kbck kbcl kbco kbdb kbdl kbdo kbkb kbkk kbkl kbko kblb kbld kbll kblo kbob kboc kbod kbok kboo kcbc kcbd kcbk kcbl kccb kccc kccd kcck kccl kcdc kcdd kckc kckk kckl kcko kclc kclk kcll kcob kcol kdbb kdbl kdcc kdcd kdco kddb kddc kddd kddk kddl kdkb kdkd kdkk kdko kdlb kdlc kdld kdll kdlo kdoc kdok kkbb kkbd kkbl kkbo kkcb kkcd kkck kkcl kkco kkdc kkdd kkdl kkdo kkkk kklb kklc kkld kkll kklo kkob kkol kkoo klbb klbc klbd klbl klcb klcc klcd klck klcl kldc kldd klkc klkk klkl klko kllb kllc kllk klob kloc klok klol kloo kobb kobc kobk kobo kocb kocd kock kodk kodl kodo kokb kokc kokk koko kolb kolc kold kolk koll kolo koob kooc kook kool kooo lbcc lcbc lccc lcdd llcc lldb lldc lllc llll lloc llod lloo lob- lobb lobo locc lock loco lokk loko lold loll lolo loob looc lood look lool obbo obkb obok obol ocbc occc oclc odbo oddd odoo okko oklo okok okol olbo olcc oldb ollo oold oolo oooo