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Win8 Strawberry 5.8.9.5 (32)  Tue 07/26/2022  5:28:42
C:\@Work\Perl\monks
...
Orig: '#tag2 #tag1 #tag2 #tag3 #tag1'
Uniq: '#tag2 #tag1 #tag3'
Dups: '#tag1, #tag2'