cccc cccp ccee ccpe ccpp ccpr ccrc ccre ccrp cec- cece cecp ceec cepc cepe cepp cepr cer- cerc cere cerp cery ceze cezy cpce cpep cper cpre crcc crce crcr crcz cre- crec cree crep crpc cry- cryz cyc- cycc cypc cyre cyy- cyyc czyz eccc ecce ecpp ecrc ecrr eeee eerc eery eeze epcc epec epee eper eppc eppp eppy eprp ercc erce ercp erec erer erez erpe errc erre eryc erye eyec eyer eyey eyez eype eyre eyry eyyr ezer pccc pcce pcep pcer pcpp pcrc pcre pece pecr pecy pecz peec peep peer pepe per- perc pere perp perr pery peyr peze pezy ppcc pper pppp pprc ppye prcc prcp pre- prec pree prep prey prez pyce pyep pype pypy pyr- pyre pyry pyzy rccc rcep rcyc recc rece recp recr recy recz reep repe repp repr repy rere rery reye reze rpyc rrrr rype ryze yccc ycee yeep yeer yepe yepp yere yerr yery yeye yeyr ypcc yyyy zeep zepp zeze zrce zrze zypp zzzz