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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