Permutations For BLURB

Here are all the permutations for the letters BLURB.

blur blru bulr burl brlu brul lbur lbru lubr lubr lrbu lrbu lbur lbru ublr ubrl ulbr ulbr urbl urbl ublr ubrl rblu rbul rlbu rlbu rubl rubl rblu rbul blur blru bulr burl brlu brul