c-cd cccc cccl cccu ccdc ccdn ccdr cclc ccnc ccnr ccnu ccoc ccod ccrc ccrl ccuc cd-r cddl cddr cdnc cdon clcd cldc cldr clod clon cloo clor clou clrd clro clud clun cnco cndd cnrc cnrr coco cocu codd codl col- cold coll coln colo colu con- conc cond conn cono cood cool coon cor- corc cord corl corn coro corr coud coul coun cour crcc crcr crdc croc crod crol cron croo cror crud crun cucc cucn culc culd cull culo cund cuno cuon curd curl curn curo curr dccc dccl dccu dcon dddd ddlc ddoc ddrc dlco dnoc dnrc doco docu dod- dodd dodo dold doll dolo dolu donc dond donn dono donr dood dool doon door dorc dord dorn doro dorr doru douc doud doul doun dour drno drod drol dron drou druu duco dudd dudo dudu dulc dull dulo dulu dunc dunn duno duo- duon durn duro duru duul duur lccc lcdd lcdr lcor lcrd lcrl llcc lldc lllc llll lloc llod lloo llud lncr lndn locc locn loco locu lold loll lolo lond lono lonr 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 nccc nccn nccr nccu ncdc ncdn ncdr ncdu nclc ncln nclr ncnc ncnd ncoc ncor ncrc ndcc nddo ndoc ndor ndrc nlcc nnnn nocl noco nodo nodu nold noll nolo non- nonn nono nonu noo- nool noon nooo noor nor- norc nord norn noro norr noul noun nour nrdc nroc nron nrrc nrrd nrrl nucu nudc nudd nudo null nunc nunn nuno nuoc nuon nurc nurd nurl nurn nurr nuru occc occn oclc ocon ocrl ocro ocrr ocul ocur oddd odon odoo odor odou odrl odur olcc oldn ollo olon olor olur onc- oncd onco ondo onno onod onon onor onur oocr oold oolo oooo oord orco ordn ordo ordu orlo orlu ornc orno oro- oron oror orro oucc oudc ould oulu oun- ound our- ourn ouro ouu- rccc rcdc rcnl rcnr rcon rcrd rdoc rnco rndc rnld rnod rocc roco rodd rodo rold roll rolo ronc rond rono rood rool roon roor rorc roro roru roud roul roun rrrr rrun rudd rudl rudo rull rulo runc rund runn runo rurc rurd ruro ruru ruud ruun ucdc ucdd ucon ucrc udon udoo udun ulcc ulco ullo ullr ulno ulo- uloc ulul uncc uncl unco undo unno unon unro uocc uolc uor- urdu uro- urol uroo urun urur uulu uuno uuoc uuuu