cccc cccu ccee ccgc ccoc ccrc ccre ccrg ccuc cec- cece ceco ceec cege cego ceor ceou cer- cerc cere cero cgcc cgcg cger cgro coce coco cocu cogo cor- corc core corg coro corr coue cour crcc crce crcr cre- crec cree creg creo creu croc croe croo cror crue crug cucc cuce cuer cure curo curr eccc ecce ecco eco- ecog ecou ecrc ecrr ecru eeee eeoc eerc eerg eero egcc egcg egcr egec egee eger egge eggo ego- egor egre eore ercc erce erec erer erg- ergg ergo eroc eroe eroo errc erre erro eruc erur euer euge eur- eurc eure euro gc-c gccc gcrg gece geer gege gegg gego geo- geog gere gero geru geue gggg goce gocr goer gogo goog goor gore gorg goro gorr gou- goug gour grcc grce grec gree greg greu groc grog groo gror grou grrr grue grug grur guer guge gugg gugu gure gurg guro gurr guru o-eo occc oce ocee ocre ocro ocrr ocur oec- oecc oeec oere ogee oger ogge ogog ogou ogre ogro oocr ooer oooo oore orce orco ore- orec oreg oreo orer orge orgo oro- oroe oror orro oucc ouer ouge our- oure ouro ouu- rccc rcgc rcrg recc rece recr recu rege rego regr regu reog reou rere rerg rero reru reue reuu rocc roce roco roeg roer roge rogg rogo roog roor rorc rore roro roru roue rrrr ruce ruer ruge rugg rurc rure ruro ruru ucrc ugcc ugcg ugeo uggo ugro ugur uguu uocc uor- uore ure- urge urgu uro- uroo urre urur uuoc uuuu