cccc cccl cccp cccu cclc ccnc ccnp ccnu ccoc ccpl ccpn ccpp ccuc ccup clon cloo clop clou clpp clun cnco cncp coco cocp cocu col- coll coln colo colp colu con- conc conn cono cool coon coop copo copp coul coun coup cpcu cplc cucc cucn culc cull culo culp cuno cunp cuon cupl cupo cupp lccc lcpc lcpl llcc lllc llll lloc lloo locc locn loco locu loll lolo lono looc lool loon loop lopp lopu loul loun loup louu lppl lull lulu lunn luno lupo lupu luup n-up nccc nccn nccp nccu nclc ncln ncnc ncoc ncpc nlcc nlpc nnnn nocl noco noll nolo nolp non- nonn nono nonu noo- nool noon nooo noop noul noun noup npcc nppc nppl nucu null nunc nunn nuno nuoc nuon occc occn oclc ocon ocpp ocul olcc ollo olon olpc onc- onco onno onon onpu onup oolo oooo opo- opon oppo oucc oulu oun- ouu- pccc pccl pcll pclo pcpn pcpp pcun plcc ploc plon ploo plop plou plpp plup pnln pnnl pnon pnpo pnpp pnup poco poll polo polu ponc pono ponp pool poon poop pop- popc popo popp poul poun poup ppcc pplo pppn pppo pppp pull pulo pulp pulu punc puno punu pupl pupu puuc uccp ucon ulcc ulco ullo ulno ulo- uloc ulul uncc uncl unco uncp unlp unno unon unop unpc uocc uolc uplo upnp upon uppc uppp uppu upup uucp uulu uuno uuoc uuuu