What's the latest semester that I can take required courses?

The following shows the latest semester that you can take each required course and still graduate in four years. Note that we don't encourage taking courses this late.
  1. CS 60: Spring of sophomore year
  2. Math 55: Fall of junior year
  3. CS 70: Fall of junior year
  4. CS 121: Spring of junior year
  5. CS 81: Fall of senior year
  6. CS 105: Spring of senior year
  7. CS 131: Spring of Senior year
  8. CS 140: Spring of senior year