Permutations For RIFIE

Here are all the permutations for the letters RIFIE.

rife rief rfie rfie rife rief reif reif irfe iref ifre ifer ierf iefr frie frie fire fier fire fier feir feir irfe iref ifre ifer ierf iefr erif erif eirf eifr efir efir eirf eifr