c-p-c ccccc ceene ceese cence cenex cenpn cense cepes cesce cesen cesse cnnnn cpesc csnps e-cps eccen ecspp eeeee eeens eence eense eepee ences enese ennes epeen epees epene eppes epsxe esces esene esens esnes espec espen espns essen esses essex esspn essse excsc execs execx exene exsec n-p-n neece neeps neese nenes neppe nesen nesse nexen nsecs nsess nsnps nspcc p-n-p peces peece peene peens peeps peese pence pene- penes penex penne penns pense pepee pepes peppe pesce pesen peses pesse pexec scene scnce seece seene seens seeps seese sence senec senen senes senex senne sense sepen sesce seses sesse sexes sexps snees snepe sneps snese specc spece specs speen spees speex spene spens sssss xexex xsens