If I understand you correctly, the only line you are really interested in is the one with the long string of all_caps letters which you have stored as a scalar element in an array called @se. Instead of one big string, you want that to contain a reference to an array of individual letters?
Have to agree with ptum, but for clarity's sake, the 'unknown' => []; would get filled with 'unknown' => {split(//,$_)}; . This could be done with an array of arrays too though... and I would probably go with a hashes of hashes with the last value of each contained hash being the array of letters... But then maybe I am just dazed and confused... :-)
...the majority is always wrong, and always the last to know about it...
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I'm sure lots of us would be glad to help. What have you tried so far, heidi?
Hint: try split with an empty pattern //.
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