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hard question (for me)

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From:
Vitor Carlos Flausino
Date:
February 13, 2002 06:54
Subject:
hard question (for me)
Message ID:
3C6A745D.4040605@dti.pga.pt
Can someone tell me what does this pattern means?

((NI)( NI| )? ?(\d{10}|\w{5})|(NI )?(QG|SR) ?(\d{9}))


Who is $1, $2, $3 .....

thanks,

-vcf.DTI.PGA


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