How about: 

  my @matches = $string =~
    /
     ^                          # beginning of line
     (\d{1,5})                  # 1-5 digit number
     \s+                        # gap
     (?:                        # group
        ([A-Z0-9()-]{7})        # 7-char thing
         \s+                    # gap
        ([A-Z0-9()-]{7})        # another 7-char thing
     ){1,45} # 7-char thing     # up to 45 groups
     $                          # end of line
    /gx;

[download]
Update: Added /g to regex. Oops.

In reply to Re: Perl Regex by pbeckingham
in thread Perl Regex by Anonymous Monk

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