cccc cccu ccgc ccoc ccrc ccrg ccuc cgcc cgcg cgro ckck ckco ckgo ckoc ckoo ckor ckrc cock coco cocu cogo cok- coko cook cor- corc corg cork coro corr couk cour crcc crcr crkc croc crok croo cror crug cruk cucc cuck cuk- curo curr gc-c gccc gcrg gggg gocr gogo goku goog gook goor gorg goro gorr gou- goug gouk gour grcc groc grog grok groo gror grou grrr grug grur guck gugg gugu gurg gurk guro gurr guru kccc kcck kccr kccu kcgc kcgr kckc kckk kcko kckr kcog kcor kcou kcrc kcrg kcro kcrr kcru kcuk kgcc kgcr kggg kggo kggr kgor kgou kgrc kgrg kgrk kgro kgrr kkck kkco kkcr kkgo kkgr kkkk kkoo kkor kkrc kkrk kkro kkrr kkuu kock kogg kogo kogu kokc kokk koko kokr koku kooc koog kook kooo koor koou korc korg kork koro korr koru kour kouu krcc krcg krco krcu krkc krkk krko krkr krku kroc krog krok kroo kror krrc krrg krrk krro krrr kruc krug kruk krur kucc kuco kucr kugo kugr kukk kuku kuok kuoo kurk kuro kurr kuru kuuk kuur kuuu occc ocro ocrr ocur ogog ogou ogro okcu okgo okko okok okor okro okur oocr ooku oooo orco orgo orko oro- orok oror orro oucc our- ouro ouu- rccc rcgc rcrg rocc rock roco rogg rogo rokk roko rokr roku roog rook roor rorc rork roro roru rouk rrrr ruck rugg rukk ruku ruok rurc ruro ruru ucrc ugcc ugcg uggo ugro ugur uguu ukcc ukko ukok ukrc ukur uocc uor- urgu uro- urok uroo uruk urur uuoc uuuu