Example 1: leading ";" means this is a list of
  letters instead of a pattern
list of letters or pattern: ;lolewf
list of letters or pattern: ---
  The --- says: show me all 3 letter words that can be formed
  from my letter "universe".
elf
ell
few
foe
fol
low
owe
owl
woe

# Example 2:
# Show me all 4 letter words which can be formed from
# the "list of letters" that have "l" as the 3rd letter

list of letters or pattern: ;odlswe  # List of Letters
list of letters or pattern: --l-     # A search pattern
dole
owls
sold
sole
weld
wold