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Pig >> mail # user >> Flatten a Bag on One Line?

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Flatten a Bag on One Line?
This is probably easy, but my PigLatin is rusty, and I don't seem to be
able to find an answer on Google. If I have a record of the form:

     98812   3       {(48567859),(15996334),(15897772)}

How can I flatten that bag to leave all members on a single row, ie:

     98812    3    48567859    15996334    15897772