old_contents: # coding: UTF-8
  
  """
  Convert numbers into their Dutch written form.
  """
  
  from __future__ import unicode_literals
  
  try:
      unicode
  except NameError:
      # Python 3
      unicode = str
  
  UNITS = [
      "nul", "een", "twee", "drie", "vier", "vijf", "zes", "zeven",
      "acht", "negen", "tien", "elf", "twaalf", "dertien", "veertien",
      "vijftien", "zestien", "zeventien", "achttien", "negentien"]
  
  TENS = [
      None, "tien", "twintig", "dertig", "veertig", "vijftig", "zestig",
      "zeventig", "tachtig", "negentig"]
  
  
  def cardinal(n, threshold=None):
  
      if threshold is not None and abs(n) >= threshold:
          return unicode(n)
  
      if n < 0:
          return "min " + cardinal(abs(n))
  
      if n < 20:
          return UNITS[n]
  
      if n < 100:
          q, r = divmod(n, 10)
          a = TENS[q]
          if r == 0:
              return a
          b = cardinal(r)
          joiner = "en" if not b.endswith("e") else "ën"
          return b + joiner + a
  
      if n < 1000:
          q, r = divmod(n, 100)
          a = cardinal(q) if q > 1 else ""
          b = cardinal(r) if r > 0 else ""
          return a + "honderd" + b
  
      # Fallback to numerical representation
      return cardinal(n, threshold=0)
  
  
  def ordinal(n):
      raise NotImplementedError("Ordinal numbers not yet implemented")
  
  
  # Aliases
  
  hoofd = n = cardinal
  rang = nth = ordinal
  
new_contents: # coding: UTF-8
  
  """
  Convert numbers into their Dutch written form.
  """
  
  from __future__ import unicode_literals
  
  try:
      unicode
  except NameError:
      # Python 3
      unicode = str
  
  UNITS = [
      "nul", "een", "twee", "drie", "vier", "vijf", "zes", "zeven",
      "acht", "negen", "tien", "elf", "twaalf", "dertien", "veertien",
      "vijftien", "zestien", "zeventien", "achttien", "negentien"]
  
  TENS = [
      None, "tien", "twintig", "dertig", "veertig", "vijftig", "zestig",
      "zeventig", "tachtig", "negentig"]
  
  
  def cardinal(n, threshold=None):
  
      if threshold is not None and abs(n) >= threshold:
          return unicode(n)
  
      if n < 0:
          return "min " + cardinal(abs(n))
  
      if n < 20:
          return UNITS[n]
  
      if n < 100:
          q, r = divmod(n, 10)
          a = TENS[q]
          if r == 0:
              return a
          b = cardinal(r)
          joiner = "en" if not b.endswith("e") else "ën"
          return b + joiner + a
  
      if n < 1000:
          q, r = divmod(n, 100)
          a = cardinal(q) if q > 1 else ""
          b = cardinal(r) if r > 0 else ""
          return a + "honderd" + b
  
      if n < 10000:
          q, r = divmod(n, 100)
          if r == 0:
              # exactly divisble by 100, e.g. "tweeëntwintighonderd"
              a = cardinal(q) if q > 1 else ""
              return a + "honderd"
  
      # Fallback to numerical representation
      return cardinal(n, threshold=0)
  
  
  def ordinal(n):
      raise NotImplementedError("Ordinal numbers not yet implemented")
  
  
  # Aliases
  
  hoofd = n = cardinal
  rang = nth = ordinal
  
subject: Implement support for "tweeëntwintighonderd"