eeee eele el-p elee eler elex elle elpe epee eper eple epll eppp eprp epxp er-x erel erer erle erll erpe erre exel exer expr exrx leel leep leer lele lell lepe lepp lere lerp lexx llll lppl lprp lrrr lxxx peel peep peer pel- pele pell pepe per- pere perl perp perr ple- plee plex plpp pper pple pppp pre- pree prel prep prex prle prlr reel reep rele rell relp repe repl repp repr rere rexx rlee rrle rrrr xeer xer- xexe xlpe xper xrep xxxx