cccc cccp ccee cche cchp cchr ccpe ccpp ccpr ccrc ccre ccrp cec- cece cecp ceec cepc cepe ceph cepp cepr cer- cerc cere cerp chce chch chcp chec chee cheh chep cher chpp chpr chrc chrp chrr cpce cpep cper cpre crcc crce crcr cre- crec cree creh crep crpc eccc ecce eche ecpp ecrc ecrr eeee eerc ehcc eheh eher ehre epcc epch epec epee eper eph- eppc eppp eprp ercc erce erch ercp erec erer erhc erpe errc erre hccc hcch hcpc hcrp hech heep heer hehe hepc hepe hepp herc here herp herr hhhh hhpc hpcc hppe hree hrpc hrpp hrrc pccc pcce pcep pcer pchp pcpp pcrc pcre pece pech pecr peec peep peer pehe pehr pepe per- perc pere perh perp perr phcc phe- phrr ppcc pper pppp pprc prcc prcp pre- prec pree prep rccc rcep recc rece rech recp recr reep rehe repe repp repr rere rhce rhcp rhee rrrr