cccc cccl cccp cclc ccnc ccnp ccoc ccpl ccpn ccpp clon cloo clop clpp cnco cncp coco cocp col- coll coln colo colp con- conc conn cono cool coon coop copo copp cplc lccc lcpc lcpl llcc lllc llll lloc lloo locc locn loco loll lolo lono looc lool loon loop lopp lppl nccc nccn nccp nclc ncln ncnc ncoc ncpc nlcc nlpc nnnn nocl noco noll nolo nolp non- nonn nono noo- nool noon nooo noop npcc nppc nppl occc occn oclc ocon ocpp olcc ollo olon olpc onc- onco onno onon oolo oooo opo- opon oppo pccc pccl pcll pclo pcpn pcpp plcc ploc plon ploo plop plpp pnln pnnl pnon pnpo pnpp poco poll polo ponc pono ponp pool poon poop pop- popc popo popp ppcc pplo pppn pppo pppp