You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
def num_to_word(num):
    switcher = {
        1: 'one',
        2: 'two',
        3: 'three',
        4: 'four',
        5: 'five',
        6: 'six',
        7: 'seven',
        8: 'eight',
        9: 'nine',
        10: 'ten',
        11: 'eleven',
        12: 'twelve',
        13: 'thirteen',
        14: 'fourteen',
        15: 'fifteen',
        16: 'sixteen',
        17: 'seventeen',
        18: 'eighteen',
        19: 'nineteen',
        20: 'twenty'
    }
    if num < 20:
        return switcher.get(num, 'under twenty')
    elif num < 100:
        tens = num // 10
        remainder = num % 10
        return switcher.get(tens, 'under one hundred') + ' ' + switcher.get(remainder, '')
    else:
        hundreds = num // 100
        remainder = num % 100
        return switcher.get(hundreds, 'over one hundred') + ' hundred ' + num_to_word(remainder)

print(num_to_word(123))  
user
one hundred two three
assistant