Investigate $$the $$total $$number $$of $$attempts $$needed $$to $$issue $$the $$brute $$forse$-$attack $$for $$the $$following $$cipher $$case: $$It $$was $$produced $$by $$a $$permutation $$cipher $$with $$the $$output "XRWCA" $$in $$English $$alphabetic $$letters $$