-ene cccc ccee ccgc ccnc ccne ccnr ccrc ccre ccrg cec- cece ceec cege cen- cene ceng cer- cerc cere cern cgcc cgcg cger cnrc cnrr crcc crce crcr cre- crec cree creg cren crne eccc ecce ecne ecrc ecrr eeee eeng eerc eerg egcc egcg egcr egec egee eger egge egne egre ence enee eneg ener enge engg engr ennc enne ercc erce erec eren erer erg- ergg erne errc erre gc-c gccc gcrg gece geen geer gege gegg gen- genc gene geng genn gere gern gggg ggrn gncc gngc gnrc gnrr grcc grce grec gree greg gren grrr nccc nccn nccr ncec ncee ncen ncer ncgr ncnc ncrc ncre necc nece necr neen neer nege nene neng nerc nere nerr ngen nger nngn nnnn nren nrrc rccc rcgc rcnr rcrg recc rece recr reen rege regn regr rene reng renn rere rerg rrrr