The rules that use the vocabulary item "three" are:
fox three
bugs three
three <up_to_six> <digit>
bugs three
three
oh three
zero three
one three
twenty three
two three
three <up_to_six> <digit>
bugs three
bugs three
bugs three
three
bugs three
three
three hundred
three hundred fifty
three thousand
three thousand five hundred
three hundred thousand
three hundred fifty thousand
dash three
bugs three
three
three
bugs three
three <up_to_six> <digit>
three
three
three
bugs three
bugs three
bugs three
bugs three
three
three <up_to_six> <digit>
bugs three
three
bugs three
bugs three
bugs three