bbbb bbdd bbdo bblb bbrc bcbc bccc bccl bcnu bcor bcru bcuc bd-r bdbc bddc blcu bldc bldr blno blob bloc blod blon bloo blou blrc blub blud blur bnoc bnor bnrr bobb bobo bobu boco bocu bodb bodo bodu bold boll boln bolo bolu bonc bond bonn bono bonu boob booc bood bool boon boor bor- bord born boro borr boru boud boul boun bour brcb brdo brno brob broc brod brol bron broo bror brou brrr bruc brud brun bubb bubo bubu bucc buco bucu budb budd budl budo budu bulb buld bull bulu bunb bund bunn buno bunu buol buon bur- burb burd burl burn buro burr buru c-bo c-cd cbbc cbcc cbcl cbcn cbcr cbcu cbdb cbdc cbdn cbdo cblb cblc cbln cbnd cbol cbrd cbrl cbrn ccbc ccbn cccb cccc cccl cccu ccdc ccdn ccdr cclc ccnb ccnc ccnr ccnu ccob ccoc ccod ccrc ccrl ccuc cd-r cddb cddl cddr cdnb cdnc cdon clcd cldc cldr clob clod clon cloo clor clou clrd clro club clud clun cnbc cnbl cnco cndd cnrc cnrr cobb cobo cobu coco cocu codd codl col- colb cold coll coln colo colu con- conc cond conn cono coob cood cool coon cor- corb corc cord corl corn coro corr coub coud coul coun cour crbc crbu crcc crcr crdc crob croc crod crol cron croo cror crub crud crun cub- cubb cucc cucn culb culc culd cull culo cund cuno cuon curb curd curl curn curo curr d-bo dbcc dbnl dbrn dcbc dccb dccc dccl dccu dcdb dcon dddd ddlc ddoc ddrc ddub dlbd dlco dnoc dnrc dobb dobl dobu doco docu dod- dodd dodo dold doll dolo dolu donc dond donn dono donr doob dood dool doon door dorc dord dorn doro dorr doru doub douc doud doul doun dour drbc drno drob drod drol dron drou drub druu dub- dubb dubc dubu duco dudd dudo dudu dulc dull dulo dulu dunc dunn duno duo- duon durn duro duru duul duur lbcc lblr lcbc lccc lcdd lcdr lcor lcrd lcrl llcc lldb lldc lllc llll lloc llod lloo llud lncr lndn lob- lobb lobo locc locn loco locu lold loll lolo lond lono lonr loob looc lood lool loon loor lord lorn loro loud loul loun lour louu lrdd lroc lron lrrc lrrr ludd ludo lull lulu lund lunn luno lurd nbbc nbbo nbcc nbco ncbc nccc nccn nccr nccu ncdc ncdn ncdr ncdu nclc ncln nclr ncnc ncnd ncoc ncor ncrc ndcc nddb nddo ndoc ndor ndrc nlcc nlrb nndb nnnn nobc nobo nobu nocl noco nodo nodu nold noll nolo non- nonn nono nonu noo- noob nool noon nooo noor nor- norb norc nord norn noro norr noul noun nour nrdc nrlb nroc nron nrrc nrrd nrrl nubc nubl nucu nudc nudd nudo null nunc nunn nuno nuoc nuon nurc nurd nurl nurn nurr nuru obbo oblu obol obon obor obro ocbc occc occn oclc ocon ocrl ocro ocrr ocul ocur odbo oddd odnb odon odoo odor odou odrl odur olbo olcc oldb oldn ollo olon olor olur onc- oncd onco ondo onno onod onon onor onur oocr oold oolo oooo oord orbb orbo orbu orco ordn ordo ordu orlo orlu ornc orno oro- oron oror orro orub oucc oudc ould oulu oun- ound our- ourn ouro ouu- rbbb rbbr rbcl rcbc rcbo rccb rccc rcdc rcnl rcnr rcon rcrd rdoc rnbr rnco rndc rnld rnod rob- robb robo robu rocc roco rodd rodo rold roll rolo ronc rond rono roob rood rool roon roor rorc roro roru roub roud roul roun rrrr rrun rubb rubu rudd rudl rudo rull rulo runc rund runn runo rurc rurd ruro ruru ruud ruun ubbo ublo uboc ubod ubon ubud ucbc ucdc ucdd ucon ucrc udbc udon udoo udun ulbc ulcc ulco ullo ullr ulno ulo- uloc ulul unbd uncc uncl unco undo unno unon unro uocc uolc uor- urdu uro- urol uroo urun urur uulu uuno uuoc uuuu