cccc cccl cccu cclc ccnc ccnu ccoc ccuc clon cloo clou clun cnco coco cocu col- coll coln colo colu con- conc conn cono cool coon coul coun cucc cucn culc cull culo cuno cuon lccc llcc lllc llll lloc lloo locc locn loco locu loll lolo lono looc lool loon loul loun louu lull lulu lunn luno nccc nccn nccu nclc ncln ncnc ncoc nlcc nnnn nocl noco noll nolo non- nonn nono nonu noo- nool noon nooo noul noun nucu null nunc nunn nuno nuoc nuon occc occn oclc ocon ocul olcc ollo olon onc- onco onno onon oolo oooo oucc oulu oun- ouu- ucon ulcc ulco ullo ulno ulo- uloc ulul uncc uncl unco unno unon uocc uolc uulu uuno uuoc uuuu