From 42da53e2fbec9f5c31f170190ae60d61fd6f2ce6 Mon Sep 17 00:00:00 2001
From: Roger Bell_West <roger@firedrake.org>
Date: Fri, 16 Aug 2019 11:26:57 +0100
Subject: Blog post for #21

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 challenge-021/roger-bell-west/blog.txt | 1 +
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+https://blog.firedrake.org/archive/2019/08/Perl_Weekly_Challenge_21.html
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