import random


def generate_possible_words(n):
  """
  Generates a list of random strings to use as possible words in the wine bottle names.

  Args:
    n: The number of possible words to generate.

  Returns:
    A list of random strings.
  """

  # Create a list of possible characters.
  possible_characters = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l",
                         "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x",
                         "y", "z"]

  # Create a list of random strings.
  possible_words = []
  for i in range(n):
    # Generate a random word of random length.
    word = ""
    for j in range(random.randint(7, 12)):
      word += random.choice(possible_characters)

    # Add the word to the list of possible words.
    possible_words.append(word)

  return possible_words


def suggest_names(bottle_sizes, possible_words):
  """
  Suggests names for wine bottles of the same size, ensuring that bottles of the same size have the same name.

  Args:
    bottle_sizes: A list of bottle sizes in liters, with the trailing letter "L" removed.
    possible_words: A list of possible words to use in the names.

  Returns:
    A list of suggested names for the wine bottles, in the same order as the bottle_sizes list.
  """


  # Create a dictionary to store the bottle sizes and their corresponding names.
  bottle_names = {}

  # Iterate over the bottle sizes and suggest names for them.
  for size in bottle_sizes:
    # If the bottle size is already in the dictionary, use the corresponding name.
    if size in bottle_names:
      name = bottle_names[size]
    # Otherwise, suggest a new name and add it to the dictionary.
    else:
      # Get the last word from the list of possible words and remove it.
      word = possible_words.pop()

      # Convert the word to lowercase letters.
      name = word.lower()

      # Add the name to the dictionary.
      bottle_names[size] = name

  # Return the list of suggested names, in the same order as the bottle_sizes list.
  bottle_names_list = []
  for size in bottle_sizes:
    bottle_names_list.append(bottle_names[size])

  return bottle_names_list


def main():
  """
  The main function.
  """

  # Generate a list of possible words.
  possible_words = generate_possible_words(11000)

  # Get the number of bottles.
  n = int(input())

  # Get the bottle sizes.
  bottle_sizes = []
  for i in range(n):
    size = input()
    # Remove the trailing letter "L" from the bottle size.
    if size[-1] == "L":
      size = size[:-1]

    # Add the bottle size to the list of bottle sizes.
    bottle_sizes.append(float(size))

  # Suggest names for the wine bottles.
  bottle_names = suggest_names(bottle_sizes, possible_words)

  # Print the suggested names.
  for name in bottle_names:
    print(name)


if __name__ == "__main__":
  main()