StringPermutations.txt

s = "abc"
first = "a"
remainder = "bc"
words = "bc, cb"
permutations = "abc, bac, bca, ..."

 s = "bc"
 first = "b"
 remainder = "c"
 words = "c"
 permutations = "bc, cb"

   s = "c"
   first = "c"
   remainder = ""
   words = ""
   permutations = "c"