{
  "[PAD]": 0,
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  "[UNK]": 3,
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  "two": 6,
  "three": 7,
  "four": 8,
  "five": 9,
  "six": 10,
  "seven": 11,
  "eight": 12,
  "nine": 13,
  "ten": 14,
  "eleven": 15,
  "twelve": 16,
  "thirteen": 17,
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  "sixteen": 20,
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  "twenty": 24,
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  "sixty": 28,
  "seventy": 29,
  "eighty": 30,
  "ninety": 31,
  "plus": 32,
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  "times": 34,
  "equals": 35
}