cccc cccl cccu cclc ccoc ccuc ckck ckcl ckco ckoc ckoo clok cloo clou cock coco cocu cok- coko col- colk coll colo colu cook cool couk coul cucc cuck cuk- culc culk cull culo k-lo kccc kcck kccl kccu kckc kckk kckl kcko kclc kclk kcll kclu kcol kcou kcuk kcul kkck kkcl kkco kkkk kklc kkll kklo kkol kkoo kkuu klcc klck klcl klkc klkk klkl klko kllc kllk kloc klok klol kloo klou kluk kluu kock kokc kokk koko koku kolc kolk koll kolo kolu kooc kook kool kooo koou koul kouu kucc kuco kukk kukl kuku kull kulo kulu kuok kuol kuoo kuuk kuul kuuu lccc llcc lllc llll lloc lloo locc lock loco locu lokk loko loll lolo looc look lool louk loul louu luck luko lull lulu luuk occc oclc ocul okcu okko oklo okok okol okul olcc ollo ooku oolo oooo oucc oulk oulu ouu- ukcc ukko ukok ulcc ulco ullo ulo- uloc uluk ulul uocc uolc uulu uuoc uuuu