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Date: Wed, 31 May 2017 23:40:11 -0500
From: Alex Liu <>
Subject: Need help for understanding rule preprocessor

Hi Guys,

I am a computer science student at The University of Chicago. I am using
john (version:  1.7.9-jumbo-7_omp [macosx-x86-64]) and got confused by the
preprocessor command. I wonder what the following two commands mean:

-[:c] <* !?A \p1[lc] p
-[:c] l /a /e /l /o /s sa4 se3 sl1 so0 ss$ (?\p1[za] \p1[:c]

Specifically, what does [:c] and -[:c] mean? What does \p1[za] and \p1[lc]
mean here?

Thank you in advance for your help!

*Alex Liu*
Computer Science Department
The University of Chicago

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