bbbb bbdd bbdo bblb bcbc bccc bccl bdbc bddc bldc blob bloc blod bloo bobb bobo boco bodb bodo bold boll bolo boob booc bood bool c-bo c-cd cbbc cbcc cbcl cbdb cbdc cbdo cblb cblc cbol ccbc cccb cccc cccl ccdc cclc ccob ccoc ccod cddb cddl clcd cldc clob clod cloo cobb cobo coco codd codl col- colb cold coll colo coob cood cool d-bo dbcc dcbc dccb dccc dccl dcdb dddd ddlc ddoc dlbd dlco dobb dobl doco dod- dodd dodo dold doll dolo doob dood dool lbcc lcbc lccc lcdd llcc lldb lldc lllc llll lloc llod lloo lob- lobb lobo locc loco lold loll lolo loob looc lood lool obbo obol ocbc occc oclc odbo oddd odoo olbo olcc oldb ollo oold oolo oooo