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Getting started: working in a pair for the second time
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If you are working with the partner you worked with previously on PA #2,
only one of you needs to register as a pair for the assignment. You
will not need to get a new repository, and can continue using your
existing shared repository.

Here are steps necessary for students with CNET IDs A and B to
register as a pair for pa3 and use their previously-created pair
repository

1. Register your existing group for the assignment. Student A
   can run this::
    
       chisubmit student assignment register pa3 --partner B

   Since you already worked together previously, student B doesn't
   have to run this command.

2. Run ``git pull`` to make sure your local copy of your pair
repository is in sync with the server and ``git pull upstream master``
to pick up the distribution for PA #3.

Please let us know if you have any problems.