#!/usr/bin/env python3

class roman1:
    roman_numeral_map = (('M',  1000),
                         ('CM', 900),
                         ('D',  500),
                         ('CD', 400),
                         ('C',  100),
                         ('XC', 90),
                         ('L',  50),
                         ('XL', 40),
                         ('X',  10),
                         ('IX', 9),
                         ('V',  5),
                         ('IV', 4),
                         ('I',  1))

    def to_roman(self):
        '''convert integer to roman numeral'''
        for numeral, integer in self.roman_numeral_map:
            print(numeral, integer)


if __name__ == '__main__':
    roman = roman1()
    roman.to_roman()