cccc cccl cccu cclc ccrc ccrl ccuc ckck ckcl ckrc crcc crcr crkc crkl cruk cucc cuck cuk- culc culk cull curl curr kccc kcck kccl kccr kccu kckc kckk kckl kckr kclc kclk kcll kclr kclu kcrc kcrr kcru kcuk kcul kkck kkcl kkcr kkkk kklc kkll kkrc kkrk kkrl kkrr kkuu klcc klck klcl klcr klkc klkk klkl klkr kllc kllk klrc klrk klrr klru kluk klur kluu krcc krcl krcu krkc krkk krkr krku krlc krrc krrk krrl krrr kruc kruk krul krur kucc kucr kukk kukl kuku kull kulu kurk kurl kurr kuru kuuk kuul kuur kuuu lccc lcrl llcc lllc llll lrrc lrrr luck lull lulu lurk luuk rccc rrrr ruck rukk ruku rulk rull rurc ruru ucrc ukcc ukrc ukur ulcc ullr uluk ulul uruk urur uulu uuuu