Permutations For RMPEE

Here are all the permutations for the letters RMPEE.

rmep rmep rpem rpem remp repm remp repm mrep mrep mper mper merp mepr merp mepr prem prem pmer pmer perm pemr perm pemr ermp erpm emrp empr eprm epmr ermp erpm emrp empr eprm epmr