input: def generateMarkov(text: str) -> str:
      """ Generate Markov chain text based on the input text.
      >>> generateMarkov('Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, `and what is the use of a book,' thought Alice `without pictures or conversation?')
      """
      words = text.split(' ')
      markovChain = {}
  
      for i in range(len(words) - 2):
          current = words[i]
          next = words[i + 1]
          if current in markovChain:
              if next in markovChain[current]:
                  markovChain[current][next] += 1
              else:
                  markovChain[current][next] = 1
          else:
              markovChain[current] = {next: 1}
  
      generatedText = ""
      current = random.choice(list(markovChain))
      generatedText += current
  
      for i in range(100):
          choices = markovChain[current]
          choices = [
              key for key, value in choices.items()
              for i in range(value)
          ]
          try:
              current = random.choice(choices)
              generatedText += " " + current
          except:
              break
  
      return generatedText
output:     
      import random
  
      words = text.split(' ')
      markovChain = {}
  
      for i in range(len(words) - 2):
          current = words[i]
          next = words[i + 1]
          if current in markovChain:
              if next in markovChain[current]:
                  markovChain[current][next] += 1
              else:
                  markovChain[current][next] = 1
          else:
              markovChain[current] = {next: 1}
  
      generatedText = ""
      current = random.choice(list(markovChain))
      generatedText += current
  
      for i in range(100):
          choices = markovChain[current]
          choices = [
              key for key, value in choices.items()
              for i in range(value)
          ]
          try:
              current = random.choice(choices)
              generatedText += " " + current
          except:
              break
  
      return generatedText
  