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use Sort::Key::Multi qw(n2_keysort);
my @data = <>;
my @sorted = n2_keysort { (split)[1, 0] } @data;
print @sorted;

use Sort::Key::Multi qw(rnn_keysort);
my @data = <>;
my @sorted = rnn_keysort { (split)[1, 0] } @data;
print @sorted;