unpack solution: 
my $bin = '1001100010100001';
print join ' ', unpack '(A4)*', $bin;

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: Add space in long string by choroba
in thread Add space in long string by lddzjwwy

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