Update: I misread the question.

thundergnat's pattern doesn't work for me with my 5.6.1, it puts every character into an element.

I had: push @ans, $1 while $str =~ /(.{3}|.{1,2}$)/g;

Be well,
rir

In reply to Re^2: Puzzlement in Splitsville by rir
in thread Puzzlement in Splitsville by tlm

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