You just want to split each of the extracted tuple-strings: 
my $aref = [ map [split], $s1 =~ /(?=([a-z]\s*(?:\S+\s*){2}))\S+\s*/gi
+ ];

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In reply to Re^3: Decompose a String into Tuples (Faster and Compact Way) by Roy Johnson
in thread Decompose a String into Tuples (Faster and Compact Way) by neversaint

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