Try 

my $re = qr(\d{1,2}\.\.\d{1,2});

# $re = qr(\d+\.\.\d+)
# is more general, and probably better
# unless you want to be able to detect
# deviations from the pattern you posted;
# likewise, the space used in the full
# regexp below may be needlessly specific;
# you may want to change it to \s+ to allow
# for variable-length whitespace between
# the parts.

$line =~ /^((?:$re )+$re)/;
my $captured = $1;
my @parts = split ' ', $captured;

[download]

Update: : added line to collect the desired parts, the commented more general alternative for $re, and explanatory comments.

the lowliest monk

In reply to Re: Regular expressions and metacharacters by tlm
in thread Regular expressions and metacharacters by Jaya

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.