[
  ["are", "aren't"],
  ["can", "can't"],
  ["could", "couldn't"],
  ["did", "didn't"],
  ["does", "doesn't"],
  ["do", "don't"],
  ["had", "hadn't"],
  ["has", "hasn't"],
  ["have", "haven't"],
  ["is", "isn't"],
  ["must", "mustn't"],
  ["should", "shouldn't"],
  ["was", "wasn't"],
  ["were", "weren't"],
  ["will", "won't"],
  ["would", "wouldn't"]
]