def number_to_word(n):
    """Convert a number between 1 and 99 to its English word representation."""
    ones = ["", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
    teens = ["", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]
    tens = ["", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"]
 
    if 1 <= n <= 9:
        return ones[n]
    elif 10 <= n <= 19:
        return teens[n - 10]
    else:
        ten_digit = n // 10
 

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