#!/usr/bin/env ruby

class Morse

  MAPPING = {
	'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'  => '--..',
	'0'  => '-----',
	'1'  => '.----',
	'2'  => '..---',
	'3'  => '...--',
	'4'  => '....-',
	'5'  => '.....',
	'6'  => '-....',
	'7'  => '--...',
	'8'  => '---..',
	'9'  => '----.',
	' '  => ' / ',
  }

  def self.text_to_morse(string)
    result = ''
    string.scan(/[a-zA-Z0-9]| /).each do |word|
      word.each_char do |char|
        result << MAPPING[char] + ' '
      end
      result << ' / '
    end
    result
  end

  def self.morse_to_text(string)
    result = ''
    string.split(' / ').each do |word|
      word.split(' ').each do |char|
        MAPPING.each do |k, v|
          if v == char
            result << k
          end
        end
      end
      result << ' '
    end
    result
  end

end

STDIN.each_line do |line|
  puts Morse.morse_to_text(line)
end