rules :: [Rule]
rules =
  [ ruleToNineteen
  , ruleHundreds
  , ruleCompositeHundreds
  , ruleCompositeHundredsAndUnits
  , ruleCompositeHundredsAndTens
  , ruleTens
  , rulePowersOfTen
  , ruleCompositeTens
  , ruleDotSpelledOut
  , ruleLeadingDotSpelledOut
  , ruleDecimals
  , ruleCommas
  , ruleSuffixes
  , ruleNegative
  , ruleSum
  , ruleSumAnd
  , ruleMultiply
  ]
rules =
  [ ruleToNineteen
  , ruleHundreds
  , ruleCompositeHundreds
  , ruleCompositeHundredsAndUnits
  , ruleCompositeHundredsAndTens
  , ruleTens
  , rulePowersOfTen
  , ruleCompositeTens
  , ruleDotSpelledOut
  , ruleLeadingDotSpelledOut
  , ruleDecimals
  , ruleCommas
  , ruleSuffixes
  , ruleNegative
  , ruleSum
  , ruleSumAnd
  , ruleMultiply
  ]