new_contents: import sys
  
  def prependAbbrev(front, abbr):
      if type(front) is type(abbr[0]):
          return [front + abbr[0]] + abbr[1:]
      else:
          return [front] + abbr
  
  def prefixAll(p, lst):
      return [prependAbbrev(p, l) for l in lst]
      
  def findAllAbbrev(s):
      if len(s) == 1:
          return [[s], [1]]
      else:
          rest = findAllAbbrev(s[1:])
          return prefixAll(s[0], rest) + prefixAll(1, rest)
  
  for s in findAllAbbrev(sys.argv[1]):
      print ''.join([str(i) for i in s])
  
subject: Add python answer to q3