Permutations For BITRT

Here are all the permutations for the letters BITRT.

bitr bitr btir btri brti brti btir btri ibtr ibtr itbr itrb irtb irtb itbr itrb tbir tbri tibr tirb trbi trib rbti rbti ritb ritb rtbi rtib rtbi rtib tbir tbri tibr tirb trbi trib