ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/6.2/cpan/CPAN-archive/authors/id/R/  direct

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[DIR]RS/  direct  228+ twin directories
[DIR]RR/  direct  377+ twin directories
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[DIR]RB/  direct  217+ twin directories
[DIR]RA/  direct  491+ twin directories